Cramping a lot

Tia

I'm 12 weeks and 3 days with baby #3 and am having lots of cramping. Not to where I'm hunched over in pain but it is happening frequently and it is noticeable. My last ultrasound was at 9 weeks and 4 days and baby was super active with a strong heartbeat of 160 but this is making me nervous. Is anyone else experiencing this and does it sounds normal ??