Acid reflux and back pain

Imani • I break bodies, not necks🤘🏻

So this is my third pregnancy 🤰🏻. 7w and 4days. I'm due Feb 26,2018! My first two pregnancy unfortunately ended in miscarriage. I'm very excited but I'm experiencing symptoms quite early. Acid reflux is quite frequent almost every morning. I cough and it comes up🤦🏼‍♀️. Any suggestions? Also I toss and turn every night, I can't find a comfortable position to sleep in🤷🏼‍♀️☹️. My rainbow baby is making me super emotional 😭.