Hello ladies

So this is my second time been pregnant, my son is now 8 months old and I am currently 10 weeks pregnant, yes I wasn't surprised since I hadn't been on birth controls, although i did try it tge natural way and didn't work out as planned lol, anyway when I was pregnant with my 1st, my doctor put me on a protein shake around 7 months because my son was a bit small, so this time I decided to start high Protein early, unfortunately these protein shakes are rather expensive and was wondering if any of you ladies knew of any other safe high in protein cereal or foods that are affordable which I can add to my diet?, eggs are a huge no no as the first time around it made me rather sick, your help will be much appreciated, thanks!