I already asked about this. But in response to query from doctors - I don't have any issue in my periods, my doctor also told me after tvs that everything is fine. My last period date was 15th Jan and my periods have always been regular with a day or two here and there. I've never had any fertility treatment or blood transfusion. I do take medicines for tsh. I've been trying for pregnancy since 1 year and got pregnant last year but it ended in missed miscarriage. That's why I'm asking about the possible reason of prescribing regestrone. And whether or not it is advisable to take while planning for pregnancy?