I’m cursed....

I have PCOS and have been trying for 14 years to have a baby. Since I have had nothing but miscarriages, my sister offered to carry my baby for me. After 3 tries, we found out she was pregnant and we were beyond excited! The baby I have always wanted! Yesterday, we went to the ER due to bleeding... her HCG was only 450 (she was 6 weeks) and there was no evidence of a viable pregnancy on an U/S. This was her first pregnancy and I feel so bad I put her through this... and she feels like she let me down, which is not true at all.

But, why am I cursed? The only thing I have ever wanted was a baby and no matter what steps I take, it only leads to loss and heartbreak. I’m a good person.. I’d make a great mom. Why do I deserve this? Does God hate me?