Thanks for your query.
I will try my best to provide you with best possible professional recommendations to your questions.
DO NO attempt to get pregnant for these 3 months! The injection is intended to shrink the endometriosis
, by concentrated hormones, so AFTER you will be more likely to become pregnant.
It is unlikely you would have your period while these injections are ongoing. Try to avoid unprotected sex during the course of treatment.
Yet again, I do hope that you have found something helpful and I will be glad to answer any further query.