You shud consult with Ivf clinic ..when I had IVf I've been told to use pesseries till 2 weeks .. if positive get more from gp.. X

I had isic and had to that them pessarys untill week 8 of pregnancy but your docs know what's best for you xxx

I didn't have IVF but I took Vitex to regulate my period after being on Implanon and pills for a year. For my last 2 pregnancies that I lost, I weaned off vitex too early. And I read that if you've been on progesterone or vitex aka chasteberry, you should weaned off at 12 weeks onwards. That's what I did and I'm now 16 weeks. xx hope this helps a bit