Confused & need answers. (TMI)

Lizbeth
I've been away from glow for about 3 months now. Ever since I miscarried I haven't had a period but the weird thing is that I still discharge, (white creamyish & also clear stretchy) in this past week I've spotted twice I took a picture of today this morning. The pic Im showing is different from last time, the first time it was as if I was going to start my period very light pinkish color. 
Could I be pregnant? I haven't tested in about a month or so. Or could it be something more serious? My dr doesn't really show any concern about it, he's just told me that to get my period I'd have to lose weight , I'd have to lose weight in order to ever get pregnant? My current weight is 259lb. & im 5'7. 
I