Hello Miss Speculations!
Thank you for asking.
I wonder who told you getting fingered can impregnate you or menses can be there despite
pregnancy. that is remotely not possible.
And the crampings you have are probably due to that sexually finger gifted organisms which have managed to reach your Reproductive tract.
So thanx to the fingers which were responsible for it.
PMS is not even the remotest posibility,
And yes you are overly worried for some thing you dont have and not worried at all for some thing you need to be. Thats is UTI and vaginal infections.
Get hypoallergenic hygiene gels with some
clotrimazole topically applied and
metronidazole for 7 days.
Avoid fingers, use healthy and human friendly aseptic techniques for intercourse, void after it, Drink some cranberry juices, Have some garlic products. Avoid excessive douches and Get to know some Gynecologist.
Your knowledge about human reproduction is mythological, needs update
Cheers
S Khan