I started getting scrotal swelling a couple of days ago. Will I be back to normal by next week?

Not if a hydrotycele. Will settle down if due to trauma. Unlikely if a hydrocele and not if it is a tumor. Suggest see a urologist and get an ultrasound if it persists.
Scrotal edema. Depending on your age this can be a sign of fluid overload, infx, hernia....I advise seeing primary md for veal.