Am I crazy? Or maybe pregnant?? Please help! First baby👶🏼

Hello! My husband and I haven't been trying for long at all. I just got off the nuvaring last month. But for a couple of weeks now my boobs feel like giant sandbags and my nipples have been so sore and swollen. Wearing a bra has never been so uncomfortable in my life. I'm also extremely tired all the time. I went to bed last night at 730 and slept all night long until 630 this morning! Also I am so moody. Similar to my emotional state during my period but I've felt this way for a couple of weeks and my period isn't for another week. This is behavior is very unusual for me. I do understand the science behind fertility and that if I am pregnant then I would have gotten pregnant before I ovulated and that doesn't make sense but nothing about my lifestyle has changed to cause these changes in my body.. So could I be pregnant or is this just a hormonal imbalance from getting off birth control? This is our first so we're kinda antsy(: