Should I be hopeful??

I have had 2 miscarriages in the past and recently discovered I am pregnant again. Today I am supposed to be 6 weeks 4 days, the longest of all my pregnancies. Well about  5 days ago I started some VERY light spotting only when I wiped which continued for 3 days and never soaked through a pantiliner. I went to see my OB 4 days ago and they drew blood and told me to get an ultrasound scheduled (at the hospital, where the machines are more advanced) and to come back in 2 days. Two days ago I went and got more blood drawn and they told me my hcg was at 11,000 which is good but my progesterone was a little low. I then had a scan that day and the sonographer was not allowed to give me any info as she is not a dr but from what I saw on the screen for myself, the amniotic sac and yolk sac were present and measured 6 weeks 2 days. Yesterday I started passing some clots and experiencing some heavy bleeding and cramping. Today I'm still bleeding a bit but not nearly as much.  My dr is closed on weekends and after my scan I was told the pictures would be sent to my OB who would then give me a call. I still "feel" sort of pregnant in fact my beasts are even more sore and I'm peeing even more often. I just wanted to know if you guys think I could still be pregnant or if it's over.