Help me please!

So I'm not due for af till dec 16 . I baby danced on dec 1st. It was a pretty fertile day for me. I had clear sticky mucus and cramps so I know I was ovulating . My question is my nipples are very sore, there's a odd dark ring around them and I'm not sleeping well. I have been cramping and having tings of pelvic pain for the last couple days and horrible heartburn. I took a test yesterday it was neg. but i kno it's early. Any chance I'm pregnant