Hi, my labia randomly became a little itchy and swollen yesterday afternoon. My boyfriend and I had sex some hours later and after sexual intercourse, my boyfriend had a couple of burning, red patches on the underside of his shaft. Towards the evening of today, my clitoris became itchy and I noticed the same red patch on the hood of clitoris. There are no bumps nor urination pains for either of us. This is his second time with the patches and thus is my first. There is no buildup of any sort. Just red, itchy patch. And we don t have any STIs.