Length of time before it started working?

I know that the time frame was around 3 months according to my allergist. I'm nearing the end of my second injection, about to get my third and I have noticed absolutely no difference. I am trying to remind myself, it takes time - but then I have read so many stories of people having life changing relief in 1-2 injections.

I'm taking it mostly for uncontrolled dermatographia/hives even on all of the antihistamines I take and have taken for years.

I also got shingles for the first time, a week after my second dose so I am not sure how concerned I should be about that.