I've started 6 mth zoladex inj to treat endometriosis. had my first injection 6 days ago and started bleeding heavily yesterday, pain has been so severe i nearly asked my husband to take me to hospital. taken diclofenac and cocodamol and it is slightly better. I thought zoladex stopped periods so i'm really worried that i have had a painful period 6 days after the injection. they were bad before but this has probably been the worst one. I can't find much advice on this on the internet