Itching After Alar Base Reduction, is This Normal?

It's been about six weeks post op for me, going on seven, and after the nostril reduction, the itching on the sides of the nostrils has been on some days almost unbearable. I notice some dead flaky skin where the incisions were and this flakes off when I scratch, but if I scratch too much I actually get some minor bleeding on the sides of the nostril. Is this kind of sensitivity/itching normal, and how long might it last? I've been taking antihistamines every day.