Are these pregnancy symptoms?????

Hi, I am 23 years old and a bit confused on whats going on with me. I am sometimes very paranoid. Ok, here is the scoop. My boyfriend and I have sex on a more than consistent basis, sometimes 3-4 times a day on weekends (because we are off :-P) and we dont use condoms. He pulls out every time and ejaculates on my body, away from my lower regions. We have been doing this for about 8 months now and no pregnancy scares. But this time, my period was about 4 days late (normal) and when it did come, the first day was heavy like a regular period, but what made it weird was that it was nonexistent on the 2nd day... and thats never happened to me before. Heavy on the first day and little to nothing on the 2nd. Only 2 days. Also, I have been dizzy and I threw today at work after eating some apple slices and a salad. I tried really hard to keep it down, but i threw up EVERYTHING I had eaten. One more thing, i have been having little pinches in my lower abdomen and my "period" has already come and gone so I wouldnt think i would still be having cramps. Please give some feedback on what you guys think. I just didnt want to waste any money on a test if i was just overreacting (As i usually do) THANKS!!