White flakes after sex?

Recently after having sex with my boyfriend there have been small white flakes on his penis and the skin around my vagina. We think it may be the vaginal fluid from me dried up. :(
It's kind of gross. It's also on the sheets a bit where I've been laying.

I don't have any other symptoms or anything.

What is it?
Is it normal? Does this happen to other people?
Can I prevent this? This happened before too but we thought there was somethng wrong the condom- the outside went chalky/flaky. I guess it's coming from me.

Should I get checked out or something? :/

Thanks in advance.

[Trialanderror]

That`s perfectly normal. Dried bodily fluids that come off due to friction. Comes from both of you, however semen would not dry up as fast as vaginal fluid, so you would be the main contributor...sorry for being so graphic. Just place a towel on your sheets and do not worry!

[lovethebops]

yeah..we've had that...just take a shower after, and it gets cleaned off.