It is going to cost a few bucks, but you will have your privacy and you won't have to be nervous about being stabbed
, mugged, whatever. I doubt you are pregnant
, but if you are, it is better to know now rather than later. Also, try Campus Health (or whatever it is called where you are). They have pregnancy tests there.
I don't know the answer to your "is infertility hereditary" question. I would have to think it isn't but I don't know for sure.