I wore a pair of flats that rubbed a blister on my left heel and normally if i get a blister it goes away pretty quick except this one wont. I got a new pair of shoes that kinda rubbed my heel not bad but enough to irritate it and make it pretty hard to walk. The blister popped and burned ive kept a band aid over it put neosporin on it let it breathe after 2 days then put a new bandaid on. I stopped wearing the shoes that rubbed my heel and started wearing my old ones it still hurts a little to walk but definitely bearable. The blister is getting bigger though like the edges will form a blister pop then scab and then the edge will form a blister again. It started as a little blister now it looks like this

I dont walk alot except at school even at school i kind of push the back of my shoe down so its not rubbing it and i take off my shoes anytime i can and as soon as i get home. It itches alot and burns a little idk what else to do ive been keep it clean but it doesnt look like its going away or getting better.