Me and my boyfriend have had sex and the last couple of times, there has been brown dried stuff on the condom... he says its skin cells...
I haven't had a period in 4 months going on 5 (meaning since August.. I have irregular periods. I think the reason I have had ireg periods is because of weight gain and stress.)
I don't feel pregnant AT ALL.
What could this be? I really need help1 has this happened to anyone before?

Yes, it's common. It's menstrual tissue and blood, which turns brown pretty quickly. It can happen when pregnant and when not. If condoms are your only BC, do a test every month.

OK. Thank you.