Miscarriage 1/24/18

I had a miscarrige yesterday. it was one of the worse days of my life. I was 9wks and 4days(first pregnancy). Looking forward to my Doctors appointment on Monday to hear the heartbeat again and BOOM..it all started to fall apart at 10pm. I felt my stomach coming out of my body. The pain was like no other. I normally suffer from painful menstrual cramps but this pain was Beyond me. In the ER once I went into the bathroom to pee in a cup I saw a lump of tissue come out and that is when I lost my self. My pregnancy wasn't planned, but once I decided to keep the baby. I was ready! it made me happy..I was looking forward to every step. I bought books, signed up for classes, took vitamins,started eating my veggies.lol. Now I feel empty. I am not sure what cursed it. Why my body wasn't ready for it? or Was it me? my Fibroid(I was told it was small and no harm to baby). I keep asking Why?