What in the world is biting me ?

For 2 or 3 weeks now I am getting these itching spots, which I assume are bug bites. It only happens at home. But it doesn’t seem to matter what room I am in or what time of day it is. I have searched and searched everything to see if I can find any buggers and I can’t. The bites are only under my clothes. I have researched this to death and cannot find a thing. They almost look like mosquito bites but aren’t white in the center. Someone please help!