Hello, Welcome to JustAnswer. Are you on any medicines ? Have you seen a doctor / had any tests ?
Do you have a fever too ?
no meds. havent seen a Dr. yet. No fever. My son said he had same thing for a few days but went away.
Did you have a fall / get hurt ?
Such a pain and swelling of the calf should not be ignored .. this can be from a venous thrombosis causing pooling of blood in your legs and thus the pain and swelling