Pregnant and covid makes me so nervous

I just found out I'm pregnant with my rainbow baby a couple days ago (about 4 weeks along)

I've been fully vaccinated and I'm still very cautious about wearing a mask and washing my hands religiously. However, my workplace doesn't take covid seriously, and the vast majority of our customers make it known they are against the vaccine or wearing masks.

I worry I'm going to get a variant of covid not covered by the vaccine, and I worry about the health of my pregnancy if that happens.

Should I leave my job or am I just over thinking and anxious?

I have other means of income that don't deal with the general public as closely, however it's independent work and I wouldn't have paid maternity leave when the time comes.

I just want a healthy pregnancy and baby.