I'd check with your PD first since you're still in the first trimester, but generally makisan should be fine as long as it's from a reputable place and freshly made. Raw fish does carry a small risk of listeria which is extra concerning in pregnancy, so if you're really craving it, maybe go for the cooked or tempura options instead and you'll still get that satisfaction without the worry, hor.
Can. Why not??
Nur Lyana