Day 2 and my vagina feels swollen shut very painful when walking siting standing no discharge or odor starting to feel very nauseas frequent urination?

As above. Day 2 for what? U seems to be very symptomatic, my advise to see u pcp for evaluation and treatment.
UTI. You may have a urinary tract infection (uti). Your doctor can run some simple test to tell and, if that is the diagnosis, can prescribe some antibiotics to clear the infection. Make an appointment as soon as possible.