Is there any problem if we have unprotected sex?

my girlfriend had unprotected sex with her ex-boyfriend. and her ex-boyfriend also had unprotected sex with his ex-girlfriend. now if I will have unprotected sex with my girlfriend then is there any problem to both of us?

well, first, there would be risk of pregnancy,

plus risk of stds, soo
to put it short, yeah, could be a problem

yes
she could have gotten an stds from her ex
who could have got one from his ex or from anyone else he’s slept with
so you should both get tested for stds and use a condom
it doesn’t sound like she’s asking for a baby
and unprotected sex is the best way to get pregnant and get an std
so if she and you don’t want either so those, be smart and safe and use protection

Maybe, maybe not. Could be pregnancy or STDs. Sometimes even with protection; especially with some STDs. Just get tested and see.

Go get both of you checked out at a clinic.