try crackers and ginger ale
Pepto is not recommended during pregnancy. Try things that have ginger (ginger tea, ginger ale) or vitamin b6 and doxylamine (unisom).
I would recommend speaking to your midwife. The only information I have found about pepto is that you should check with a pharmacist or medical professional before taking when pregnant.
I found that ginger tea (although I dislike it) really helped with nausea, as did milk. Cheese biscuits are supposed to be good too.
It will pass - just persevere with it :) you will be feeling grand in no time