When a man inserts his tab A into a woman's slot B and releases his seed inside there is a chance for the woman to become pregnant. So far we haven't yet seen any evidence that the MC has impregnated anyone, which makes sense since its only been a couple weeks since the girls moved in and on average it takes around a month or so for most women to notice symptoms; and most pregnancy tests only work around the time of your first missed period. So anyone that is impregnated currently won't even know for a while.