Pregnant, or is it an infection? Stress or hormones?

Alright, it started with me getting my first boyfriend a few months ago. When he asked me out, I literally couldn't eat, and I eat--well ate-- myself out of house and home on a daily basis. I still can't eat more than a few bites. My immune system suffered greatly and I find myself getting sick really easily. Last Friday, out of the blue, he kind of just put my hand on his thing. I was shocked and quite frankly traumatized but I went along with it. I felt really sick and dizzy, but luckily his parents came home so I took my hand back. Immediately following the event, I felt different and a little light-headed, and his dog started humping me. --Now, I'd been to his house and played with that dog quite a few times and that dog has never humped me and he even said that his dog has never done that before, to anyone or anything-- We both figured it was hormones and just kind of excused it. That night I still felt sick and dizzy and like something was wrong, like my body felt. . . off. Like something had changed. I kept thinking about it and I couldn't sleep because I felt so wrong inside (which wasn't too out of the ordinary because I've been an insomniac for years). The next day, a complete 180, I was fine with it, in fact I felt as though I wanted more. I invited him over that Monday since it was a three-day weekend. We were in my room when my parents told me that they were going to be home alone. He offered to take his shirt off and I declined and told him to keep it on, he took it off anyway. I didn't mind too terribly. He asked multiple times if I was okay with what we were doing, I replied yes. He sat up and told me his feelings. I told him that it was fine and then he asked if I wanted to see his thing. I declined and he just put my hand on it. So we ended up playing with each other's parts. He fingered me, sort of, and he has really long nails and it hurt a bit when his finger was down there. My parents came home, so we stopped. Later, we continued where we left off and this time he took his pants off and I gave him a hand job, after a while he took his hand out of my pants and he started stroking himself, which was wet with pre-ejaculate. He then put his hand back in my pants and continued to finger me. He didn't go very deep, less than an inch. He pulled his hand out again, then he came. He didn't put his hand back after that. I knew that there was pre-ejaculate on his hand and I knew the risks at that very moment, I don't remember why I didn't stop him. I told myself everything was probably fine, because everything always turns out just fine. My body told me everything was fine but my brain was and is in a panic. That night I let myself believe everything was fine. The next day, I felt a little bit concerned, and the day after I was morbidly horrified. I read up on early pregnancy symptoms and conception and realized that I might have implantation bleeding. I spent Wednesday fretting over the minuscule amounts of blood that were exiting. That night I snapped and suddenly all my suicidal thoughts were back. I turned into a monster and began punching myself in the abdomen. I remembered a story I had read about someone who was pregnant and was hit in the stomach and had their period the next day. I hit myself as hard as I could for about five minutes before I became fatigued and fell asleep. The next day I had vague cramps that felt different from my menstrual ones. Again, only very little blood came out. I was still not mentally stable. I found a strange mass in my armpit and had my mom make a doctor's appointment (which is tomorrow). 

Okay, so yesterday, I was really really angry and despaired over what I am still assuming was implantation bleeding. Every now and then through out the week I felt like  my period was coming but when checked I was either dry or had what looked like implantation bleeding. Yesterday I snapped again and looked up causes of miscarriages and read something about caffeine. I ended up drinking two cups of coffee and a third cup with 5 times the normal amount of coffee mix. I then read about caffeine overdose and then swallowed down  more than 10 cups of water and sat on the toilet for a few hours. I ended up with splitting headaches and intense stomach pain. I didn't eat for the rest of the day and refused any medication to ease the pain out of the guilt for the atrocity I had attempted to commit. I felt extremely light-headed, but around 6 PM I was right back full of energy and unable to sleep but I felt like I might as well have killed myself. I hinted at my mom that was pregnant but ever time she asked if I was pregnant I replied "I don't know" and she laughed as though I were joking. Which I had intentionally done. I was unable to sleep in my mom's bed because her snoring worsened my headache but my dad was sleeping in my room so I went to my mom's car to sleep, but the new car smell gave me a head ache so I laid in the back seat for an hour before I began hearing voices and I had a mild anxiety attack and ended up sleeping for two hours on the floor in my brother's room. I slept for two hours. And now I have a watery discharge which could be caused by so many things. 

My question is am I pregnant? Or is it an infection, or is it just that I'm really stressed out, or that it's a sudden hormonal change, adrenal fatigue, or maybe phantom pregnancy or another one of the many, many things that fall in line with my symptoms. Which are watery discharge, head aches, nausea, mood swings, cramps, and back aches. I don't know what to do. I can't tell my parents because they'll blame themselves and basically, I'll ruin more than just my own life. . .  I'm sorry if I'm not in the right category.