Oh dear, please don't wait on this one, sharp abdominal pain at week 11 that keeps coming back a few times a day is something your doctor or gynae really needs to check properly, and if the pain gets very intense or you have bleeding, please go to A&E straight away. I know some mild stretching feelings can happen in pregnancy, but sharp and recurring pain is not something we should try to figure out on our own online. Your baby is still so new and precious at this stage, and only a doctor with a proper scan can tell you what is going on safely. Can I ask, is the pain on one side or more spread across your whole tummy, and do you have any other symptoms like bleeding or dizziness? Please do update us after you see the doctor, we are all rooting for you and baby.