I peeled off my very big foot blister; it is very red now and hurts a lot. what shall i do?

I peeled off: See a podiatrist for PO antibiotic and wound healing products such as amerigel wound dressing with topical antibiotic/ fibracol collagen dressing that work very well and quickly heal the wound. If you have diabetis, do not wait, the infection can spread quickly.

See a podiatrist: You should try not to pick at blisters, especially the first 48 hours after they form, to allow the skin underneath to heal. It sounds like you may be developing a bacterial infection. Make an appt. With a podiatrist promptly to determine whether you need oral antibiotics. In the meantime, clean the blister with soap and water and apply an antibiotic ointment and a bandaide or sterile dressing.