Girls, did anyone have this happen? Yesterday I felt a slight pain in …

Girls, did anyone have this happen? Yesterday I felt a slight pain in my abdomen and my uterus was tense. Then it all stopped. But after that, the baby became active like never before. In the morning I went for an ultrasound, they said everything is normal. But the baby doesn't stop being active, something like this has never happened to me. It seems like it jumps occasionally, I'm already sitting thinking maybe we need another ultrasound.