As a fellow vegetarian/vegan, when I decided to conceive I too was concerned about protein, but I think I found the solution, for me at least. Can you stomach smoothies? Put some light fruit in the blender along with some HEMP POWDER, which was lots of great protein, and SPIRULINA, which is one of the most absorbable, complete sources of protein known and was recommended by my midwife. If you can't find them at a local health food store you can online.
I started drinking a green smoothie in the morning with all kinds of goodies in it, and it seriously keeps me full until mid afternoon so it seems like i'm getting good protein. I just bought but haven't yet received "Vibrant Health, Green Vibrance" (ingredients here
Vibrant Health, Green Vibrance, Version 9.0, 24.34 oz (690 g) - iHerb.com) because it had tons of great stuff in it and a pretty good amount of protein.
Now, I am definitely no expert, but I myself would not be "very worried" just concerned about protein intake, just do what you can to get it. There are many vegans out there who dispute the necessity of the very high intakes of protein during pregnancy that are typically recommended, and there are even women who only eat raw foods, basically produce, and have healthy babies. In my humble opinion, and others will disagree, your baby receiving a little less protein than recommended is certainly not worse than getting all those nasty hormones and pesticides from meat.