If you're a vegetarian you need to provide your body with foods that contain the essential amino acids that are used as building blocks of protein in the body. Every time you eat food of any kind your body breaks it down into three basic groups.
The Ultimate List Of 40 High-Protein Foods! High Protein Foods- I wish I would have found this at the beginning of my pregnancy. Lots of good options besides meat, milk and eggs. :) & High Protein for Weight Loss (Link)