Planter fasciitis

I’m almost 5 weeks post op. Have had almost no problems until 3 days ago. Woke up with the feeling of a stone bruise on sole of foot between upper heel and arch. Starts in morning and is better after I put socks and shoes on. Called Dr and confirmed it is PF. Has anyone else experienced this? I’ve read it can be caused by change in gate. Hoping stretching and ice helps. On 4th morning in a row now. No fun.