Cats and pregnancy

I just found out I’m pregnant.🙂 I have four cats and I have my husband clean the litter box he scoops it once a day and changes the litter every three days. I live in a tiny apartment and there’s only two places to put the cat box. So I was wondering do you think I’m safe? What can I do to keep the odor and dangerous stuff away from me? The litter box is in a side table thing so it’s enclosed but I’m still worried. Also one of my cats is still pretty young and pees where he shouldn’t any tips on making him stop and how to get rid of the smell? I’m sorry if this is the wrong group this one just made the most sense to post in.