Don't know what's going on?

[Sunflower18]

Hi! I've been having some issues with my body lately. I honestly don't know what's going on. About like 4 or 5 weeks ago maybe, me and my boyfriend were dry humping and I had a bathing suit on and he had shorts and underwear. I think some pre cum went through his underwear and shorts because his shorts had a wet stain on them, but I'm not sure. Is there a chance for pregnancy if he was close to my vaginal opening with the pre cum on him? Since it got through his shorts? Could it travel through my bathing suit if he was like "humping" into me (with clothes on)? Anyway, a couple weeks after that, something happened and I started cramping really bad and I had blood/dark brown discharge. Now, a month later, the same thing is happening. I'm scared it might be implantation bleeding but I don't know. I'm sorry to bother you with pregnancy questions, but I'm just scared. I've kind of had pregnancy symptoms also I think, which freak me out even more. I've read your articles on pregnancy scares & they made me feel better, but I just couldn't get this out of my head since I don't have a clear answer. Thank you for your time!

[Karyn]

The articles you've read: what do they say about the risk of pregnancy when both people are wearing clothes?