I’m surprised there was a reaction 2 weeks after it was done. It’s unlikely that it’s infected, but if it becomes hot, painful or oozes see a doctor.
Also, forget tattoo wash and tattoo moisturizer. It’s just snake oil. A fragrance free soap and a little cocoa butter are all you need and probably a quarter of the price. You just need a little bit, over moisturizing can clog the pores and cause skin issues. Last, try a cold pack for the itching.
Good luck.