TTC and Now Pain

Am I feeling ovulation pain, pms, or my uterus stretching ? For the last 2-3 days I've been having sharp pains in my lower abdomen and my back. I swear it feels like my uterus is being pulled both way but then I get a cramp. It will tighten then loosen. I'm feeling so much discomfort. I have to lay on my side most of the time. I also get a tingy or quick pinch in my vagina but it goes away. Everything comes and goes but it's soo weird and uncomfortable. I haven't even really been able to sleep at night especially with this migraine that comes and goes too. I will baby dance for the last time today and twice tomorrow. What do you think ?