My dogs are peeing everywhere

So I have 2 dogs and 2 kids. We had the dogs before kids our kids are 2 and 5 and the dogs are 11 and 12. The 11 year old is a boy and he usually never pees in the house. Our 12 year old is a girl and in the last 2-3yrs she has been peeing at night in our house. Usually in the hallway on a rug. I got sick and tired of washing the rug so I got dog diapers and started putting them on her at night. Well in the last 3 days both of our dogs have been peeing all over the house. The 11 yr old boy dog peed on our kids couch and the 12 yr old girl peed on our living room rug 3 times tonight! While we were awake and shortly after they had gone outside. One of the times was right in front of my husband. We are at a loss of why all the sudden she/they are peeing all the time. Money is tight so I don’t want to have to take her to the vet if it’s just for her peeing but this is getting nuts. It’s almost bec we started using diapers on her she’s mad and now is peeing out of spite. I know that sounds crazy but I don’t know what to do. I’m already stressed dealing with 2 kids at home and I cannot deal with our dogs pissing all over our house for NO reason!