My Dr. found I had low progesterone, so prescribed Progesterone 200 mg starting on day 10 of my cycle.  I started this month, and fortunately haven't had any of the nasty side effects some people seem to get.  But I also have had barely any ewcm this month.  I usually get it for a few days, and this month I had a little bit one morning and that was it.  I also tried using the Clear blue fertility monitor for the first time this month, and it has yet to set a peak day, which should probably have been today or yesterday, going by my calendar and past months.  My bbt chart has been high since I started taking the progesterone, which I guess makes sense since that's one of the things that makes your temp rise after o.  Then I started looking on-line and some people were saying that taking progesterone before o can actually prevent it from happening, so now I'm wondering why my Dr. would have me start taking this at day 10.  So, I'm just wondering if anyone else has been put on progesterone at day 10 and gotten pregnant?  Or if anyone has any idea why I would be told to take it on day 10 when almost everyone else seems to be given it after ovulation?                
                             
        
Re: Anyone have experience taking oral progesterone on day 10?
TTC#1: October 2015
dx: PCOS & MFI
IUI #1 w/Femara + Ovidrel June 2016 ~ BFP
July 2016: Blighted Ovum
IUI #2 w/Femara + Ovidrel September 2016 ~BFN
IUI #3 w/Femara + Ovidrel October 2016 ~BFN
IUI #4 w/Femara + Ovidrel November 2016 ~BFN
IVF with ICSI January 2017 ~BFN
FET February 2017 ~BFN
IVF with ICSI March 2017 ~BFP--Twins Due 12/8/17
Team Blue X 2!
You're absolutle right, progesterone rises AFTER ovulation, so the effect would be to trick your body into thinking it had already ocurred, thereby preventing it from actually happening. If you are indeed TTC, I think it's time to find a new doctor.
Call the pharmacy, though, since it's a Sunday, and run the directions by them. Maybe somehow you misundersrood the instructions? I know most pharmacists will actually ask the patient about it if the instructions seem off from how it's usually precsribed. I don't mean to insult you; that's just the only possible explaination I can think of, because those instructions really just are not right.
The only reason to start P4 on CD10 is if you had ovulated on CD7, and that is not a common enough thing that the doctor would assume that at all. Progesterone is always started somewhere around 2-5 days AFTER ovulation for ttc purposes, and continued for approximately 10 days throughout the rest of the LP, perhaps with specific instructions as to when to stop in order to allow menses. GL
Married: 04/05/15
TTC since: 02/16/16