Coughing won't stop

I've been coughing since the 25th October (3.5wks) and it only seems to be getting worse. It's a dry cough from my chest, quite wheezy and produces a white/yellow phlegm. I don't have a gp over here so contacted a gp in the area and they said I should go to urgent care/a&e instead but I don't think it's extreme enough for that. I don't have the time to go either as I'm not allowed to take any more sick days at work (I took two weeks off after an abortion and two separate days after and they've put me on a warning for it) and I work pretty much every day. Has anyone else experienced something similar? I feel like it's just a chest infection but it won't go, gets worse at night so I can't sleep properly :(