So very common and so very uncomfortable. Ice down there or a wet clean rag placed in the freezer and then down there after intimacy works wonders, it feels great and gives immediate relief, at least for me it does.
Also, last night, we tried to have sex, but he kept saying I don't feel like I usually do down there. It's weird to me that I even feel differently to him. We just did it like two days ago and he was fine (though I was pretty sore after. I've been more sensitive/swollen feeling for a few weeks).