I have 3 bug bites I don t no we re they came from. The one on my back is a red blog round with puss like spots. Like from a red ant bite. The skin is hard and it hurts and itches. I popped some of the blisters and clear fluid came out but now there getting an orange crust on them .
Dear, If you are not sure where have they come from and there are no other signs like fever, rash going to the parts of body then you should wait for their natural healing which is expected in 5-7 days. Popping rash prone them to super added infection and delay their healing process, which you should not do. Apply some local antibiotic ointment like newsprint.  Indiacation for oral antibiotics in your case are-infected rash not responding to local antibiotic ointment, increasing in size with pus and redness of surrounding area, presence of fever. In that case you need penicillin antibiotics by mouth take care