Pain during sex

I was having sever sever inching to the point where I thought I was going to cut my skin from a scratching. I was  convinced I had a yeast infection or uti. Got swabs and everything showed up normal. So it comes and goes. when I feel fine I tired sex but afterwards burning and felt like I couldn't pee and then a little would come out. So frustrated as I'm wanting it so bad:( anyone having issues or  have suggestion?