If it's on a big toe, they can get infected and hurt like crazy ! Real sensitive! If you're getting, call your Doctor and have him take care of it. I've had two done and it never hurt again. Don't put it off. Trust me !
Yes, an ingrown toenail can get very sore, it may also swell some and turn red. Try soaking your foot in Epsom salt and warm water, once your foot is "raisiny" try and pull up on the corner of your toenail, if there's infection there, it should come out, if not, then pulling up on the corner of the nail should give you some relief.