We started out with TONS of 3 day embies, but only a handful made it to 5 day and we had lots left to freeze. Do you think a 5 day transfer would work better since the embies tend to arrest between 3-5 days?

Thanks so much for the reply. Yes five day transfer is defentely my next step with the remaining three. My RE is not keen but I think if he is not will to do anything else yet like a medicated FET as mine are all natural why not.

Were your FETs natural?

I feel like they do somthing around day 7 because I get quite sharp cramping but after that somthing must go wrong.

I am so sorry again bluesky with your news. I dont know if you have heard of hydrosalpinx (damaged tubes from endo) before but check with your doc to make sure you don't have them. My RE said if my tubes weren't removed before IVF it would cut my chances of success with IVF by half. He said there have been studies in Europe where women with healthy ovaries, uterus, and great embryos had lower success rates because of the hydrosalpinx. I am just trying to help with what little knowledge I can. Keep me updated with how things go. I wish the best for you.

Hi Bluesky. Are they measuring your endometrial stripe? There are studies out there now that are saying that not having a withdrawl bleed, whether it's with Provera, or a natural cycle, might increase the chances of going to term with an IVF cycle because your endometrial stripe in not as thin. Maybe talking to your RE about not having a withdrawl bleed next cycle. Good luck to you, and I hope for the best for you!!!

Have your doc check for polyps in your uterus. I have done IVF five times and gotten pregnant every time....miscarriage or chemical. This last round, my doc found polyps.

I am so sorry you've struggled so much with getting those embies to implant. A lot of clinics will only do 5 day transfers because, as jodee said, they are much stronger. I would definitely look into that.
Also, my RE said after a few failed attempts, they do usually recommend PGD testing. I've heard it's a bit pricey and not usually covered by insurance, but if you can swing it, it might not be a bad idea.
And, I'm really surprised to hear of a "natural" FET. I didn't even realize some clinics did that. Maybe the timing of the implantation is off because of that? When I did my FET last August, I did lupron leading up to it and then Estrogen and Progesterone to help keep my lining and hormones at the right levels. If you feel a medicated cycle would be better for you and your RE won't do it, I would get a second opinion!
Best of luck to you!!!!