How often should I change the band-aide ?

Okay so last night I cut my ankle Majorly bad while I was shaving.Like a huge hunk of skin was in my razor.Well its pretty deep and pretty gory .When I first cut it The blood literally covered a whole towel in blood.And then 2 wash clothes.After awhile I decided well its not gonna completely stop bleeding so I went ahead and put 4 band-aides on it and some neosporin.It was about 9pm when I put the band-aide and neosporin on it.This morning I got in the shower and when I got out I started trying to Take the band-aide off and and it was stuck!It hurt so bad.Well I realized then that it had bled pretty put all night..There was no dry blood on the band-aide just wet and gewy.I changed the band-aides and neosporin.(this was about at 10am).Could this possibly get infected?Ive never cut myself this bad.On a scale from 1-10 on how bad you can cut yourself shaving id give this one a 8-9 or possibly a 10.How often should I change the band-aides and neosporin?Is there any other medicines I should use to help it heal?Or any special stuff I should put on it?Should I change it again now?Its been about 6 hours since I last changed it and washed it with a cold wet ragg.Thanks ALOT!