This is my second pregnancy, 1st tri. I feel the constant heartburn. Any tips to reduce it?

I switched to alkaline water (PH balancer) pricey but really works i developed acid reflux that causes heart burn on my 1st trim up to now everytime i get full i feel my acid is building up which causes discomfort in my stomach. But this alkaline water neutralised the acid also good for baby and aslo combats constipation. Also, avoid spicy food.