Anal drains are very uncomfortable and extremely akward, especially the first few days...but they are there for a reason and you need it to stay in until all of the drainage comes out...the pain may lessen over a few days once your body gets used to it but it will probably stay in for at least a week or more.
Try basic pain meds like tylenol or advil if you are allowed to...other than that warm compresses or a heating pad may help you get some relief.
Sharon

Ugh, they are the WORST. Sorry you're dealing with it. If you are able to lying on your side can be a little more comfortable.

It's normal to have a good amount of drainage in the first week or two (and drainage of mucus will continue until your takedown, you'll do that on the toilet) so don't worry about that.

Wish I had better advice but honestly just try to distract yourself from it and let time pass... Watch movies, take naps, have visits from friends if possible. Just laying around there moaning about it (which is what I did after a few days) definitely makes the time pass more slowly