Edited your post to remove dosing information. We don't want to aid anyone in self-medicating.
I'm going to agree with Tysilio. I switched from gel to injections, so instead of the daily stable level I'm used to, I'm now on a cycle. I haven't had any withdrawal or symptoms of coming down at the end of the cycle like I thought I would. No real negative changes at all, in fact.
Maybe the change in medication left your body more susceptible to getting sick?