Progesterone Level Drop

I am currently 9wks +3 days. My OB has been checking my progesterone levels every week due to having a previous miscarriage last year in November. Last week levels were at 21.3 and now this week levels went down to 14. I've read that doc can Rx progesterone to help. But I am a little concerned because 2 weeks ago during the ultrasound doc noticed some bleeding behind the placenta, and he has said to take is easy (pelvic rest): no exercise, intercourse, etc. I work full time and for the most part once I get home I go straight to bed since I've been feeling fatigued.