Yup, acid reflux. Try Pepcid AC. It was a life saver for me and pregnancy safe! For me it eventually got worse and even with it I was vomiting acid multiple times a week, so bring it up with your dr next appointment. I ended up having GERD and am on a new medicine for it that is like a MIRACLE. Tums for me stopped working at 13 weeks and the Pepcid stopped at like 16 weeks. I spent the last 3 weeks crying lol so yeah. If it doesn't improve or get worse definitely tell your dr.
Could be or acid reflux not really anyway to tell u hun ask ur dr but for now try tums