I'm Considering becoming a pescatarian for my health.

So I have been a vegetarian for 7 months now and I emotionally I feel so great about that. However I never ate much food to begin with so now my diet is very limited. I don't seem to be growing, I get headaches maybe five times a week and I'm now extremely pale. So I am considering becoming a pescatarian, that way I will get more protein because I'm really worried about my health.

Do you think that's okay? I know I'm going to feel horrible eating fish so I don't know what to do. My parents are also very worried about me as they feel that I'm not going enough protein also.