Acid reflux

S • Hi everyone :)
Im 39+2 
And keep getting burning acid sensation in my throat. 
Is there anything i can take until bby comes. 
Its says avoid some acid reflux medicine coz it has magnesium and can interfear with contractions. ! Dr says have peptac. But thats not working 😡 and its like a fishy taste in mouth makes me feel sick 😷😷