Possible mold ?

So currently 32 weeks pregnant 4th pregnancy I’ve lived in my home for about 7 years it’s through a section 8 voucher I have 3 other kids ages 8,6,2 currently the 2 year old has not been living with me but when I pick him up he’s ok for 3 days then gets sick with a stomach bug and we all end up catching it at the house I’ve done so much as far as disinfecting wiping everything down the whole 9 this has become a daily routine but I have ac units not central ac and I remember a while ago one of them the main one I keep on in the living room was leaking I mean this could’ve been about a year or two ago long story short under in that area there was what looked like growing mold but I ended up cleaning it up and it looked like it was fine and then just earlier on in this year preparing for this baby we painting over it it was just a small spot on the floorboard nothing too extreme but now it seems like weekly someone in the house gets sick with either a cold or stomach bug and it’s really starting to drain me especially being pregnant my boyfriend has lost so many days of work over it I feel defeated this pregnancy has given me enough problems as it is I’m just so overly stressed out at this point I can’t help but feel this way and I need help could this be mold in my house making everyone sick ? Please help I’m desperate my kids and I are drained from being sick