So I woke up Sunday morning and could barely walk. Is gotten worse

I am always barefoot or in flip flops. I run in Saucony's and bike and lift 5-6 days a week

The only thing I've dine different is wear high heels Saturday night to an event. Haven't worn heels in a while and I think that's what did "it".

Don't know what to do. Can't workout, hurts to walk. The mornings are the worse.

I am doing the Tough muddier in 6 weeks and was really looking forward to a fun day with friends

Help me get better.