mosquito bite! (warning: disgusting pics)

[Frieda]

so i got bitten on my leg on saturday night, and now it looks like this:



in the middle is a small spot with tiny little blisters and around it it's all red and the skin is hard.. i mean, wtf do i put on it??

look at the size:



i put arnica on it to reduce the swelling and that worked for a day, but it's so bad now.. even arnica doesn't work..

any suggestions?