It could be different diagnosis,consult orthopedic or physiotherapist.If pain is severe in early morning not able to walk first few steps in morning than it could be plantar fascitis.
Next Steps
Meet physiotherapist they will give Ultra sound and IFT or WAX treatment and exercise for long term management.
Health Tips
Avoid bare foot walking,use soft sleeper or MCR or doctor footwear in home also. Take contrast bath treatment, immerse your foot in llittel hot water for 3mins thna iimmerse in cold water 1 min, do 10-12 reps twice a day.