Blisters

Injury feels a bit of an overstatement but anyway.

About 10 days ago I went on a long run wearing normal, cotton socks, which obviously was a big error on my part. It was humid and led to a decent sized blister on the inner side of my big toe. This week after my long run, despite covering the blister and wrapping up my toe, the blister has doubled in size. Its a bit sore, but manageable. I've made sure to wear proper socks to prevent it happening again but with regards to this current blister, am I now just accepting this is my toe till the Marathon in May? Every time I run, its leaking haemoserous fluid. The Internet seems to want me to rest till it heals, but that would take ages. Do I just push through? Any advice on gigantic, annoyingly placed blisters would be greatly appreciated!