My mom hit her head.. is she okay? im so worried!!?

okay so my mom and i were chasing each other around the house [long story it was for fun] and my mom was wearing socks on a hard wood floor. she ended up falling and hit her head on the wall. she was shocked that that happened and when she removed her hand from her head there was blood on it. i looked at her scalp and there was a cut that was 3/4 of an inch long, maybe 1/2. its not that big. but she acts, looks, and seems perfectly fine. but then i remembered wat happened to billy mays and i FLIPPED out and started crying. im sleeping in her room tonight and we agreed to set an alarm for 12 pm [its 11 now] and shes asleep. and if anythings wrong or anything feels weird were going to the hospital. im so scared. i didnt see her skull, she has no symptoms and shes a NURSE. she said if she was actually worried shed go right now, but im so scared to wake up and have her.... not..... i started crying and i just want her to be okay. will she be okay????? PLEASE respond please!! im so scared im only 13. pleaseee! and my sisters and dad are on a roadtrip its just me and my mom. :'( :'(((