Tender abdomen

I had a midwife appointment yesterday. She used the Doppler on me, she was pressing quite hard to try and locate the heartbeat, at one point I felt a sharp nervy pain shooting all the way from just down below my belly button to my pubic bone. My abdomen is quite tender around that area today but unsure if related? Im 15 weeks does this sound normal or should I be concerned? The tenderness kind of feels like gas but I don’t feel overly gassy or bloated? Weird!