If the sensitivity doesn't get better in 1-2 weeks then maybe you could try a low dose of an AI or 10mg/day of nolva.
Don't obsess about it. And try not to play with your nipples too much.
Stayed on Arimidex and cut all my injections for 4 days.. Its drastically improved today finally. I've always been able to get rid of gyno w/ out Nolva. Just getting my E2 down and waiting works.