Side effects a year later

Hi all,

I'm wondering if anyone has had side effects randomly kick in after a long time on Ozempic?

I was titrated too quickly by my doctor last December and was very unwell.

Been on 1mg since April with no issues, no side effects and since September it hasn't felt particularly effective.

Took my shot as usual 2 weeks ago and last week, and it feels similar to when my doctor titrated me too quickly - bad heartburn and nausea, vomiting most meals up, despite them being tiny, it genuinely feels like I've doubled my dose overnight.

I did start a new pen two weeks ago too, so I'm wondering if it's incorrectly labelled (but it looks identical to my last pen, it's prescribed by a doctor and I collect from a reputable pharmacy who've been supplying it for a year)?

before I completely waste money by buying another new pen and dumping this one, has anyone experienced side effects reoccurring after a year?