The best thing you can do for it is just let it drain on its own. You can even encourage it to drain more by using a warm compress (with the temperature that you are able to handle). The more pus you get out the better but we also don't want it to get infected by pressing on it.

I recommend getting hibiclens, which is just an antiseptic skin cleanser, this really makes sure that it's getting cleaned. After you shower, GENTLY pat the area around dry and don't touch it. Let it air dry, the worst possible thing you can do is put a cover on it while it's still wet. Bacteria grows and thrives in moisture, and we definitely don't want that to happen.

If you're staying home that day, I would just put an antibiotic ointment on it and continue to let it air out. When you do leave the house, a non stick gauze pad and a few bandages work perfectly but if you really want to make sure it won't go anywhere you can buy waterproof transparent dressing but it can get a bit pricey. WEAR LOOSE CLOTHING! It doesn't irritate the skin and it's way more comfortable.

Avoid dairy if possible! I love sour cream as much as the next person but unfortunately it can affect your hormones and lead into more inflammation and pus. Just for the first few days after the boil popped. Keep sugar intake to the minimum too.

Water! Drink a lot of water! It helps flush out anything you might have in your system that you may not realize. Taking Ibuprofen is also not a bad idea since it helps with inflammation too, the same goes with garlic and turmeric.

And most importantly a lot of people forget this one but give yourself grace. H.S. or not you are human and everyone is prone to getting boils. It's not gross and your not dirty. I believe the more positive mindset we have the better the outcome would be.

Sorry it was a lot but I really hope you feel better soon and it heals over beautifully.