question: Hi,  I have had 5 miscarriages, 1 was spontaneous, and 4 were blighted ovums. After the forst 2 miscarriages, i had a son. I have had 3 blighted ovums in a row. My gyn tested me for a number of things and all tests were negative. Iam planning to conceive again this month, and have been reading on baby aspirin and progesteron to help me with this pregnancy.When should I start on the progesteron, do i take 10 mgs ? When do i start on baby aspirin?