tried to put a condom on but put it on wrong then flipped. can my girlfriend be pregnant?

hi well heres my problem.  Me and my girlfriend were at my house and we were fooling around, foreplay stuff like that.  I had a condom tucked away in my room incase and she said she wanted to try to have sex.  Shes a virgin and so am i.  so i took the condom out and opened it and tried putting it on.  it wasnt unrolling right so i flipped it over and just barely touched the tip of my penis and realized what i was doing and flipped it back over.  now about 2-3 hours before i masturbated and she gave me oral and got rid of all the cum.  now i am pretty sure there was no precum when i flipped the condom but i am not sure i did have an erection but standing infront of your girlfriend looking like an id**t trying to get a condom on kinda turned me off a bit and i started to lose it slightly.  but i got it on eventually and got ontop of her.  i started to put it in but she stopped me because it hurt her too much.  she said to try again so i did but once again it hurt to much so we just stopped all together.  2 days after she got a headache that was kinda off and on for 3 days.  then it stopped and then a week later she got another one.  within that week she got a stomach ache twice and at one time her breasts hurt one night.  now about 2-3 days ago she had urinated alot more than usual one day she may have exaggerated a little but she told me like 10 times.  she had drank alot that day mostly water a big bottle.  but then the days after shes been urinating 3-4 times a day when normally she only does 1-2 times so its scaring me alot and i want to know if she could be pregnant.  she matches alot of symptoms but she would only have been less than 1 week pregnant when the first symptoms started and now she would be about 2 weeks.  im very scared but shes supposed to get her period in about 1 week.  were both looking forward to aswell as dreading it because if she misses it we dont know what were going to do.  were not ready to be parents and are still in high school.  since we didnt have sex she never "popped her cherry" and shes still a virgin but i know that it shouldnt change anything with pregnancy.  a part of me thinks its not true because the symptoms are coming way to early and very close together rather than spread out.  she has had a cough and sinus troubles the last 2 weeks so i dont know if she might just be sick but its the urinating that makes me think alot more.  im freaking out right now the stress is killing me its even made me throw up once or twice already.  i know shes stressed too but im not sure how much its stressing her or if the stress could cause any of the symptoms i know it could cause headaches but could it also cause the urinating?  i just need some help and im very scared were too young and were not ready and i couldnt live with myself if i ruined her life with something like this because i honeslty love this girl to death and she means the world to me and i will hate myself for hurting her in any way.  in about 2-3 days she will be 2 weeks if she is pregnant.  the only symptoms she has would be urination 3-4 times but i am not 100% sure that it is even a full symptom or if maybe the stress is making her urinate more or what.  im just scared and i need some kind of help like i said before she is supposed to get her period within a week but ik that this cant be really early period symptoms because the only symptom she gets on her period are menstrual cramps and mood swings.  she hasnt had either of those and its way to early for those symptoms to start anyways.  please i just need some help here because i need to know how possible it is that she is pregnant.  please respond right away any respond will help i just am hoping for some explanation for the symptoms.  there is a flu going around where people have been getting headaches and coughs and such.  she hasnt felt any nausea or morning sickness at all.  ive read things about the pregnancy hormone that causes the headaches, but everything i read says it doesnt start being produced until 2 weeks after.  if anyone can give me some kind of reason or some explanation for the symptoms weve been seeing and also about the stomach aches when she got them i asked if they felt like menstrual cramps but she said that they didnt hurt as bad and were a litte lower so they might have just been a symptom of the flu going around my area right now but the thing that is scaring me the most is the urinating i just need an explanation for that the headaches can be anything i know but the urination scares me the most. please help!!!!