One of my big toes is red and swollen on one side. when i got a pedacure it hurt really bad. when things touch that spot it's really sore.?

Probable infection: Sometimes an oral antibiotic alone can solve the problem, other times a podiatrist may need to remove a sliver of nail. You can try soaking in warm water and epsom salt and applying a topical antibiotic , if no improvement see a foot doctor.

Ingrown toenail : Most probably. The pedicurist probably left a small piece in there. It causes inflammation and infection. Get it checked by a podiatrist before it gets worse