Pepcid during pregnancy

Is Pepcid chewables okay to take during pregnancy? Has anyone taken them and had a healthy baby? Before I got pregnant, I had severe acid reflux disease and was on omeprazole, which is not recommended during pregnancy. As soon as I found out I was pregnant, I stopped taking it. Now I am having severe discomfort and throwing up my stomach bile again. I really need to take something for it, but I want to make sure it's 100% safe for the baby. Btw I'm 6w3d