I'm sorry you're having such a hard time. Probably what helps varies with each of us, and sometimes we just suffer through the times.
I don't want this to sound like I WANT you to suffer, but since you'll be going for an initial appointment with a PM specialist in two days, it may turn out to be a "good" thing (please don't misinterpret this!) that your pain levels are up right now, as you can describe them clearly and the PM doc will have a better idea what he/she has to help you with. Chutzie has a link to a pain journal, but since you've only got two days, I'd suggest making sure you're writing down all your symptoms ( do NOT sugar coat anything) and all the activities those symptoms interfere with. Home life, work, etc. Sometimes I think we try to appear stronger to our docs when we go infor appointments, which doesn't help them see the worst of it.
In the meantime, try to do as little as possible re: activities. And if heat or ice help in small doses, that's great. Anything that helps even an ounce we use. I don't know what meds. you have prescribed, but use whatever has been given to you, including for "prn" (as needed) use. But do NOT use anything that hasn't been prescribed, or take any extra meds, especially with your appointment so close. You may likely be given a urine screen, and if there's anything that shows up that shouldn't be there (your medicines, as they are prescribed aer EXPECTED to show up - so don't stop taking them) the PM doc may not take you on. And be sure to take a list of all the meds you take, along with over the counter meds, and the meds you've taken in the 24 hrs. prior to the appointment just in case you are given a urine screen. I don't want to scare you about this, just prepare you. And again, anything that's prescribed is expected to be in your system, so don't stop taking prescribed meds!
Don't know if any of this helps, but try to take it easy and hopefully some relief is in sight in a couple of days.