Is this a m/c?

lgumby13

I have not been feeling very optimistic about this pregnancy.  My hcg levels have stayed pretty low, doubled but just low numbers.  Progesterone went down from 21 to 12.  And this weekend I started a little light pink spotting and moderate cramping.

I couldn't take the wait any longer (I have my 1st ultrasound on Wednesday).  This morning I took a hpt and the line is back to being faint, about how it was at 15dpo.  And yes, I always use FMU so there shouldn't be too much variation in my urine.  There is a huge difference in how my hpt looked last week from how it looks today. 

Any thoughts?  Just be honest, please...