Whats going on with my body!?

Hey y'all, I'm a grown freaking woman so this is weird. My hubby & I have been TTC for roughly 5 mo but recently just threw in the towel and gave up just enjoying ourselves now. Anyways the past 2.5 weeks my breasts have been incredibly heavy and grown, my (sorry if this is TMI) nipples have grown bigger, inner thighs are super tender, my hips have moved significantly in a different position - like what the heck is going on?! Also I've had random cramping all over - from my lower abdomen to my back. About 7 days past AF (missing/no period) Anyone have experience in this?