Hello all, I figured id ask my question here since you ladies are already well on your way to baby

While trying for baby #2 last year I had two miscarriages, both pretty early on (5-6weeks). I also had experienced a miscarriage in 2011 before having my daughter. All of my pregnancies have been with Clomid and since I have had three miscarriages they considered me at risk for
recurrent miscarriage. Both DH and I had chromosomal testing done last year and we both checked out with no issues.
This time around my Dr. has been watching me pretty close and said as soon as i got a BFP to call and they would check my progesterone levels. Today I am about 4w4d and had my blood drawn last Thursday (3w8d). My progesterone was 10.7 which they said was on the lower end. They started me on 100mg progesterone yesterday and we are doing the HCG level checks as well.
My question is - did any of you use progesterone in effort to prevent miscarriages? And if so do you feel that it helped?
Thanks in advance for your input. I am trying to stay positive and praying that the third time is a charm.
Re: Progesterone Levels in 1st Trimester
Mommy to 5, 1st time Gestational Carrier
Transfers #1-4 2013/2014 all same DE, all CP
Transfer #5 11/16/14, new DE, transferred two fresh 5-day blasts
Beta 9dp5dt - 296 Beta 15dp5dt - 6,596! TWINS!! due 8/4/15
Admitted to hospital for preterm labor and 5cm dilated at 32 + 6
Delivered healthy baby girls vaginally at 36 + 4
Baby A 6lb10oz born at 11:58pm
Baby B 6lb11oz born at 12:04am
(different birthdays!)
My Ovulation Chart