Expert Q & A Answers About allergic to sex

I’ve been getting friction burns on my penis with sex...or am I allergic to something? Can you help?

My girlfriend and I just recently started having sex. Unfortunately, I’ve been getting friction burns on my penis...or maybe it’s some type of allergic reaction to her? Is there a way to get rid of these symptoms other than not having sex?

I have a burning feeling in my vagina during sex...what could it be?

I have started to have a burning feeling in my vagina when I have sexual intercourse. It hurts so much, I have to stop. My boyfriend and I use condoms...so what could it be?