I think that you could be preg. and should do a home test. But i wouldnt be so worried or scared if i was you your first baby is such an exciting thing. You could be so i would go get a test and if your not take it as a learning experience for next time
you can get pregnet during period. take a at home test or ask for one at ur doctor. other sings of prencys is 1st missed period next month. 2. tender brests. 3. bad stomic paines for no reason. and the list gose on. visit web md and look up pregancy symptoms in ther search bar.
I guess it maybe possible, but it very unlikely. but if you would feel better, I would suggest you take a home test to make sure. Your period comes to flush out your system so I would say that you probably are not pregnant, but you need to take it as a warning not to ever have unprotected sex no matter what. If you have not yet done so, I would urge you to contact a doctor to discuss the right method of birth control you should be using.