Ovulating VERY EARLY?

Hi I would like to know if its happened to anyone else or can it even happen? My af is always 7 days and my 7th day was a Wednesday. I noticed my breasts were still sore not alot but it has never happened before so I took a test just to check and it was Negative. So just went about everything like normal. Until Saturday 3 days later I noticed I had alot of ewcm and I had extreme backache and cramps and pressure in my lower abdomen. Also sorry for the TMI but in the morning I had a small dry clump of dark brown colored cm. Still today Sunday I still have the same symptom but I'm also going to the bathroom (pee) more than Im used to. So Im wondering if its possible to ovulate this early or could I be pregnant? I am TTC since March. Please give me your opinions. Thank You.