Sounds a bit like Plantar Fasciitis? When I had it I had quite a sore arch when I got up, sort of like a rubber band that hurts to stretch? Don't really know how mine went away but others have recommended using a foot roller.
Yea! And eases off as soon as it’s warmed up so it’s fine when running? I’ve had it quite mild before too but I can’t for the life of me remember how I got it to go away. Will get on the foot roller band wagon!