Foot pain

Hello, I have pain in both feet. After resting whether standing up or lying down when I try to walk I have pain in the soles of my feet. this eases up slightly after walking for 5 or 10 minutes, but as soon as I rest again and then try to walk again the pain is there again very potently. I was told this might be Plantar fasciitis but I haven't had any diagnosis yet. Has anyone experience of this problem and if so, did they find any remedy to help it or cure it? My general glood-results and Lupus-markers do not show that I am in a big SLE/MCTD-flare-up. It severly impeeds my mobility and therefore it is concerns me greatly.Many thanks for your answers from Kristina.