My doctor explained that mild, pulling pain is usually round ligament pain from the uterus stretching. But she strictly warned me that if there's severe pain, cramping, or bleeding, go to the ER immediately.
Beta, mild stretching pain is normal as the baby grows. Rest properly and don't lift heavy things, but if the pain is very sharp or doesn't go away, call your doctor right away.
I used to panic at every tiny tummy ache! Most times it was just gas, but please don't take any chances—if it's heavy pain, contact your doctor immediately.
I had mild, occasional cramps which my doctor said was just my body expanding. Try to stay hydrated, but always check with your gynac if the pain feels intense.
Having gone through IVF, I was super sensitive to any stomach discomfort. Sometimes it's just your body adjusting, but please call your clinic if you feel any sharp or persistent pain.