Pescatarian and Pregnant?

Is anyone else a pescatarian? I haven’t eaten meat other than seafood for the last 15+ years and for the first time in that time frame I am reconsidering my diet. I eat generally okay but lately since I’ve been so nauseous and sick I haven’t been eating the absolute best. I’m suddenly worried about not getting enough protein because I don’t eat meat. Am I worrying about nothing? Has anyone quit their pescatarian or vegetarian diet when they got pregnant? I honestly don’t really want to do this but am just curious if it’s something I should be considering. The thought of eating meat and it possibly making me sicker than I already am is unsettling though.