Yes that's correct, I did feel physically ill from the withdrawl. Like, dying ill. Felt the same both times I tried to quit, plus I was extremely irritable. I honestly did not like the person I was during that. Actually did vomit once during the first attempt but that could have been the method I was using.
I tried a weird fake cigarette thing with nicotine in it the first try many years ago. I tried going the vape route the second time a few years ago but it ended up just being another habit and just seemed to make me want to smoke more. Like I wasn't getting what I needed from it. Never did try the patch, not sure why. I seen many of my family members try those unsuccessfully which could have influenced that.
Might just be the only thing I'll never shake off. :/