About three weeks ago I started getting nauseated around the same time every day; my pelvis started rounding out, getting hard and having cramps between periods. I am also having bad mood swings and my breasts have been hurting. My boyfriend commented the other day about how my stomach was getting bigger and how my uterus felt different. My last period was only about a week ago but it was irregular with mostly spotting except for one day. The nausea has seemed to go away but it has become harder to due up my pants and when I lean forward it feels like I am leaning on something. I have taken a pregnancy test and got a negative result, but since it hasn’t been that long since my last period I was wondering if it could have possible been wrong.