Hi, for the past few months whenever my boyfriend and I have sex it burns during and after sex for both of us. For me, the inside of my vagina burns and the outside lips get swollen and sometimes tiny abrasions. It also burns to pee. For him, sometimes his penis gets swollen, it burns for him and after a few minutes it looks like flaky dry patches all of his penis. I had an abortion 2 months ago and just started birth control (nexplanon) 3 weeks ago. We've both been tested and no stds, so what is it?