Burning help

So I've been burning really bad and it stings, so much discomfort. Not sure what it could be, like is it possible where me and my boyfriend had sex with a condom and then took it off and he went back inside, like could it be the latex or him? Or can that happen when he came inside me because that is new too. He did pull out to far and go back in and that hurt him and it hurt me a little too, is that possible? Or just fingered me a little bit before I got wet and it hurt a little then.. Not sure what is possible for this to cause. Not sure any advice on what it could be? Or what I can do to stop the burning or take away some of the discomfort ?