Pain a week after giving birth after walking up 3 flights of stairs

Marie • Hello, my name is Marie, I'm 27 years old and I joined this website the moment I found out that I was pregnant. This is my first pregnancy and I'm praying for a 100% healthy baby boy or girl 😊
Hey guys I'm in so much pain.. I forgot the doctor told me not to walk up stairs and now my stomach hurts so bad. My doctor said it's probably muscles I strained but ugh has this happened to anyone before?