I had my first mammogram a month ago. My left breast felt like it was going to pop during the procedure. Afterwards, it swelled more than twice the size. Ultrasound resulted in no hematoma. Now, a month later, a few days before my period, my left breast swelled again! My husband pointed out that it's drooping now. It's so heavy and extremely sensitive. I'm really angry, in pain, and worried. Any advice? Are there breast experts I can talk to?