I'd advise against trying to sort them yourself.
I get recurrent cysts in my groin which often get infected and become abcesses. I had a really bad one lately and the doctor basically gave me antibiotics then, when they didn't work, just told me to go to A&E.
They sent me off with more antibiotics and 2 months on it still hadn't cleared and was getting worse so ended up back there (had put it off as didn't want to take up hospital time) to be sent up to the mergency surgery ward as, with it being there so long and their strongest antibiotics not touching it, they were worried the infection may be spreading to my blood and making me ill.
I had it removed by a surgeon and had a week of near daily clinic visits to have the wound dressed and packed.
That in mind, I wouldn't do anything which might risk making them worse and getting infected - not pleasant, I can assure you - I felt awful with the infection for over 2 months. I also have scars from the infected ones.
I know how horrible and painful and unsightly they are but don't risk further complications, see if you can get a referral, you might need to wait but better for anything to be done properly.