Miscarriage

My LMP is in week 7 but the scan check was only week 5 only the gestational sac. Next appointment is 3 week later. 2 week later, I suddenly bleed alots and went to O&G at kkh. The bleeding may cause by the polyps pass out by itself. On the midnight. I feel a bit cramp and changed my pad. After changing my pad, i feel something like drop out. And it really seems like the sac has just come out by itself. This not the 1st time i having miscarriage. This my 2nd time. I had a 2 yrs old son. So when i feel something is coming out , I have already prepared for worst. Sometimes, i really ask, why me again. I know it is common, but just why me. As it feel so heartbreaking when I see the whole sac on my pad. I try to think as positive as i could but still feel so heartbreaking.