I recently went thru two back to back miscarriages. Both times my progesterone levels were very low around 4.6. During both pregnancies I had very light bleeding for weeks and didn’t know why. So I did some research and saw that low progesterone levels can cause that. My doctors never mentioned this being a problem for me. For my current pregnancy I went to GNC and got the progesterone cream they sell there and it has been very successful. I just made it to 9 weeks and everything is looking amazing for my little bean. I thought this might be helpful for some ladies going thru similar issues!