Falling during pregnancy

Hey ladies I slipped and fell down yesterday whilst taking my 1 year old daughter to the pediatrician. she has got cold and her father was holding her. I slipped on a rug of poor quality and landed on my 2 knees. I have hurt myself on my knees which are swollen and my right arm. I am currently 13 weeks pregnant. do you think it could have harmed the baby? has anyone of you fallen down during pregnancy? what did you do?