Vagina stretched...help??!?

Hey....I ask too man questions here, I know. Lol. But this is serious! It hurts so much. My boyfriend and I weren't intimate for a couple of months because we were traveling and such. Well...we were a little bit a couple of nights ago, and a lot last night. In those couple of months' time...my vagina shrunk a lot. Last night I think we over-did it (AGAIN,) and it stretched out (AGAIN). It deff. feels like it did the last time this happened, also the muscles above it and in my tummy hurt a little. What do you recommend for the pain? It feels a little better every passing hour...but it still hurts pretty badly. We've been together 3 years and are monogamous. We have both been negative for any STDS..and at my last OB/GYN appointment in October...everything looked and felt fine. I had a bladder infection a week or so ago but it's gone...so I don't think that had anything to do with it. I TREATED THE BLADDER INFECTION...so please, no preaching about THAT. Thanks for any and every piece of advice!