I need to cool down..

I woke up with my boyfriend like every morning and I just felt really bad, I was having heartburns and cramps around baby (from pelvis to the stomach to the lower back) turn out is was farts and poop... ew whatever but im still stressed im 30 weeks and my baby is not moving that much today and yesterday she was moving less than usual, maybe its because I didn't sleep well, I used my fœtal doppler to make sure she still had a heartbeat and it was hard to find, at 30 weeks I should find it reaallyyyyy easily but not this time and I don't know... I need to know everything is fine... what do you think?