Lower pain

I have been experiencing some pain in my lower abdomen area( I'm assuming is my uterus because it's right where the pain is) and it has given me a lot of discomfort today. I have also just finished ovulating, and of course it being New Years I had a lot of drinks. But the pain didn't start till today, I haven't been feeling well either, really tired, feeling sick and not handling my alcohol as much as I used too. And by that I mean feeling more sick than usual when I drink it and I haven't made any changes to what I drink. But when I woke up today it felt bruised and really sore when I moved, even when I just got up or tried to walk it would hurt, I even tried to ignore it and have sex but everytime he would hit it, it would hurt. Also something weird I've been able to smell more for example I smelt some petrol which as weird as this sounds I don't mind smelling, it nearly made me pass out! Can someone please let me know if they have experienced something similar! Or know what is going on?