Imitation crab meat is actually pollock which is a fish... but its cooked and you don't have to worry. When they say you can't eat sushi they are talking about the ones with raw fish in them..
California rolls are completely fine. There's no real meat or fish in them so there's no chance of mercury. Enjoy!
I think you'll be fine sushi is just one of the foods not recommended
It's just not recommended one its raw so bacteria isn't killed like it is when cooked as well as certain fish has high levels of mercury. If you eat it there is a risk but I mean no more risk than eating raw cookie dough, its more your preference and what you choose :)
I have lolll love California rolls... they're basically cooked so its okay to eat them :) I had a bunch of them at a buffet a few weeks ago, I'm 38 weeks