Went to open my mouth and felt like my left side of my jaw came out then went back in its very sore and hard to open my mouth now?

Sounds like. Tmj or temporal mandibular joint problem. Avoid opening your mouth too much, chewing especially on hard foods, such as gum, beef jerky. And try anti inflammatory such as Ibuprofen or naproxen. If that doesn't work, time to see your doctor.