Cycles messed up.

I've been TTC since my miscarriage in January. I got my period back February 24, then again on March 27. Since then I've had No period but my breasts are very sore, nausea, headaches, cramps, but no period and negative pregnancy tests. I have a doctor appointment on Monday with my physician but my obgyn doesn't have an available appointment until June 17th. I was just wondering is it possible that I have a hormonal imbalance? I was looking up signs and I'm not sure but has anyone else experienced this after a miscarriage?