Ugh, the dreaded ex sex with no condom. We MUST be responsible and smart when we have sex. You don't need to go to planned parenthood or a doctor at all at this point. Go to the grocery store, drug store, Target, Wal Mart, etc. and buy a home pregnancy test to take the day you expect your period. Then you'll know. Then you can go from there. If it is a no, you dodged a bullet and you can make sure to be more careful and respect your body better. If it is yes, you figure out what your options are. good luck
It could be because the sex was a little rough or that doing it multiple times dried you out causing irritation. Next time use a lubricant. Go to your Dr anyway. She has heard this before. If you still feel you can't be open with her you need a new dr. In the meantime go to your local planned parenthood or free . Also if you don't want to get pregnant use condoms.