I wonder ..

First of all i didnt know i was prego ! . Well The day before my miscarriage i had my 2 lil sisters over and when the 13yr old gets roudy she likes to jump all over me and just play rough. Well i recall me laying on my belly on my bed & her playing around on top of me. I also slept on the floor that night so they could have my bed. I sleep on my belly because that's the only way i felt comfortable. Well the next day i felt a bit weird , no appetite & i just wanted to sleep then around 6pm i tried to stomach some pineapple chunks , about an hour later i started cramping horribly and heavy bleeding , i was vomiting maybe because the pain was sooooo bad , it lasted from 7pm till about 3am. My doctor said i was basically having contractions and had my baby :( Do u ladies think my sister jumping around on me & then me having to sleep on the floor had something to do with my miscarriage ?