Are these mosquito bites?

Ma

They look like mosquito bites to me, but unlike any mosquito bites I’ve had before, they started out much smaller and barely itchy. Now, over a week later they have gotten bigger and more red and more itchy. There are lots of mosquitoes in my back yard and I can’t imagine what else it could be. I don’t think it’s bed bugs or fleas because my husband doesn’t have any and they’re only on my left arm.