Bleeding at 14 weeks

My husband and I were being silly and playing around with each other tickling and laughing. He picked me up and carried me to a chair. After he put me down, there was blood :( I went to bathroom and had bright/dark brown red blood. Didnt last long. I'm
Now wearing a pad and laying down. Now when I was 12 weeks I was bleeding and went to doctors. Doctor said a small part of my placenta was trying to reattach which caused bleeding. He said I may experience light bleeding. I'm thinking maybe rough housing with my husband could have caused bleeding. If it continues I am going to ER, but I wanted to see your opinions. :(