I'm only coming up to 6 weeks with my first but for the past 3 days I've had tight muscles in my belly. It's down the sides and up high, around my diaphragm, almost under my ribs. Nothing down low where I'd expect it. Could this be stretching as a pregnancy symptom or is it something else?? I can't really find this as a symptom from others so wondering if anyone's had it. Quite uncomfortable if I slouch at all! I don't have any other symptoms yet apart from semi-sore breasts but this tightness is uncomfortable. I thought it would be too early for stretching.