stupid scare and a bloated belly. looking for support.

we dry humped with clothes on. he says he didnt cum. im not sure. aftr a while I went in the bathroom to check for any semen in my underwear. I used my hand to touch my vagina to check for any wetness. IF THERE WAS A TINY BIT OF SPERM ON MY HAND WITH WHICH I TOUCHED MY VAGINA, is there a possibility of pregnancy? ofcourse, i never even touched his penis with my hand directly, BUT WHAT IF!! the period just after the incident got delayed by 2 weeks. but ive had 3 periods since, right on time. the only symptom is a visibly bloated belly. but due to the stress, ive lost 6 kgs all of a sudden. is that y my abdomen could be sticking out and im just noticing too much? all my 11 hpts have come out negative. I mean, an 18 week belly should be huge ryt.. with other symptoms as well?.. im freaking out. plz dont make fun of this. im going crazy.. life has been hellishly worrisome since then. I hv noone to talk to about this stuff. I come from a conservative place.