Sorry to hear that, Sarah.
It will all work out. Just prioritize what you NEED versus what you WANT. Roof, kitchen, bathroom. Carpet and flooring can wait. Just make it functional enough for you to live there. Then work on things as money allows. Please don't overextend yourself and get into financial trouble.
At night, do you sleep with your legs up a little to help with the swelling?
It sounds like you know your body and medical history well enough, and you understand what may be causing it. Do try to get in to see the GP and see what they say.
Love and hugs!