I’m 8w4d and scheduled for ultrasound tomorrow due to this issue but just wanted others thoughts. Today I’ve had cramping just generally lower abdomen/pelvis and lower back. It feels almost similar to menstrual but not as bad. Definitely there and makes me shift a lot. No spotting or bleeding. Just recently it felt like my stomach started tightening. Hard to explain besides felt like there was a band just tightening. It didn’t last long but this and the cramping makes me nervous. Anyone else?