Am 23 yr female since yesterday am experiencing headache pain in my shoulder back of my neck and ankle what could cause that?

It's most likely: Some sort of muscular tissue strain. The ankle is likely a seperate issue but watch for fever. Have you been sleeping at night or grinding, clinching teeth when u do? If so that's gonna add to it, easy to treat medically. Go in if no improvement, any new sports recently? Any inflammation? We can try a private if new onset, linked to mood sx's or insomnia but sounds self limiting. Good luck.