Just found out I am pregnant today! Well I was outside with my son and my dog came running up beside me and his chain hit my

Ankle and basically knocked my feet out from under me and I fell on my butt. Now I’m worried about my baby since I have very minor cramping, since it wasn’t a hard fall and I’m not having bleeding right now, is my baby alright or should I be worried? I’m guessing im like three weeks along. Any advice is appreciated!!!