2nd toe has perm pins to straighten. 2wks ago I dinged the tip. Swelling & bruising gone, but now red, tightly swollen on joint below nail. Infected?

Inflammatory Rx. There is no need to wonder if, and, or but. The toe has been traumatized and there is a potential for some serious complications. Get to the surgeons office and have it evaluated. Swelling could mean fracture, crack, infection or something else. To remove all doubt, have it checked out.
Description sounds. suspicious for a paronychia ( soft tissue infection under cuticle) and with a foreign body (pins) in the bone. the infection could become more complicated. My best advice would be to consult your doctor ASAP especially if you are diabetic or have any compromise of blood flow to your extremities.