Hi Dew,
Sorry to hear that you are in such a bad pain flare at the moment!

I hope you get to feeling better real soon.
I have a wheelchair that I use usually for long distances and outside the house. I try and hobble around the best I can in the house, even though it is hard and really painful as I know that it is important to try and keep as mobile as possible. There are days though when I have absolutely no choice but to use the wheelchair to get from one room to another as my pain is too much to stand and my balance is so badly affected that I will fall over etc. My mum has made the house all wheelchair accesable so we have laminate flooring nearly all over the house so that I can get through in the wheelchair.
I think it is a good idea to have the wheelchair handy for the days you can't physically walk yourself. Just keep in mind though that it is extremely important that you keep as mobile as possible so limit how much you use it etc.
My mum had to pay for my wheelchair as the UK's NHS service wouldn't cover it. It was pretty expensive but it has come in really handy and I don't know what I would do without it sometimes! I really hope that your insurance company will cover it and realise that you need some additional help!
Take care and sending you many pain-free hugs!