hating myself

I miscarried my twins 30 days ago today. I know that it can take up to 6 weeks to get your period back and even longer with some, but I'm starting to hate myself and my body. I just want to be able to try again. I'm angry because I can't yet and I hate that my body failed me and my twins. I've talked to my sister who had a miscarriage around the same time as me and she got her period back ten days later. I just feel like a waste of space and a failure. And I'm getting really angry with myself for not being back to normal already.