Free fluid in uterus/endometrium during pregnancy

Hello.  I am 8 weeks pregnant after suffering miscarriages in March 2008 and June 2010.  At my 6 week ultrasound a small amount of free fluid was seen right next to the gestational sac.  I was put on bedrest for a week and told to come back for a follow up ultrasound a week later.  At the 7 week scan, the baby was still doing well (measuring good with a heartbeat of 155) but the fluid increased.  After two nurses and my RE looked at the images, I believe the consensus was the fluid isn't blood (so not a subchorionic hematoma) but even so I don't know what the fluid is from and what this could mean for my pregnancy.  The fluid seems to have "detached" a portion of the sac from the uterine wall, but I'm not certain.  I'm still on bedrest, taking it easy, but the uncertainty is very nerve wracking.

What could this fluid be, and what could the potential implications be?  (Note: during the cycle I got pregnant I used 5 mg Femara cycle days 3-7 as well as an hCG trigger shot on day 15 of the cycle.  On cycle day 11, a large cyst (about 1 inch) was found on my left ovary.  During my 6 week ultrasound the cyst on my left ovary was seen as well as what appeared to be a corpus luteum cyst on my right ovary.  During my 7 week ultrasound, neither of the cysts were seen.  Is it possible they ruptured and are the cause of the fluid?)

Thank you.