Hello Mel,
all I can say is - hang in there, it will get better in a few days. Hopefully better painkillers will help you with the pain, but one thing that also can help with mucous and breathing is having a hot shower (or just let the very hot water to run water to flow, making sure the vapor fills the bathroom – like in sauna). Make sure you eat at least something - be it ice cream or jello or some noodle-free soup like plain chicken soup, before taking any painkillers because the last thing you want is to get nauseated. I know it’s horrible now, but you’re at the moment at the worst point and luckily, things can’t go worse from here. Make sure you stick to your painkiller schedule, maybe try drinking some protein shake to get at least some protein and hang in there,
Wish you all the best,
Nicole