I don't know if these are chiggers or some other bug ?

Last week i "found" some really itchy bug bites in my legs, I thought it was chiggers and put some nail polish on them. They are slowly starting to go away but I keep getting new bite marks! My family has had some too, but I find a new one almost everyday. I'm not walking in tall grass or anything, my grandmother who doesn't even go outside hardly has some now. I'm starting to think that either our house is infested by them bc of our dog bringing them in (he also has these bites) or it's some other bug like bed bugs or something. Plz help lol