Recurrent miscarriages

Hello everyone, I need your help. I am feeling tired and depressed, and I don't understand what's happening. Every time I reach 5 weeks into my pregnancy, it ends in a miscarriage. This is the third time it's happened. I've noticed that whenever it's about to occur, I feel pain from my anus to my pelvic area after using the toilet and standing up. I went to the hospital, where they gave me injections, including one called HYDROXYPROGESTERONE. However, once I get home, I start to see blood. I'm really worried and don't know what to do. Can anyone offer any advice or insights? Thank you.