Is it all in my mind? Or is he really trying to....

So, the other night after nearly 2 years of absolutely no intimacy, he goes out and buys a huge bottle of an unknown brand of liquor. He says he bought it for me. Now after accusing me of being an alcoholic, which sadly as the years have passed I've found myself consuming more than is necessary to self medicate because of the pain and anguish of this miserable marriage and living situation, I find it absurd he'd buy me the one thing he accuses me of abusing. But one taste of this nearly brought me to my knees. I had such abdominal pain, it could not be pacified by over the counter remedies. I tried over the counter pain reliever to allies ate the intense pain. Which he insisted could be cured with a bout of sex. Still an insensitive prick, am I surprised? No. Anyway, I then begin to experience severe chest pain, followed by nausea, and diaherra the following day. I look up my symptoms which turn out to be signs of poisoning. At first I think, my children aren't experiencing any symptoms, miso it couldn't be food poisoning, and oddly, he himself shows no signs of illness, then I think to the following morning after giving me said drink. He claimed he'd drank the same thing, but when I mistakenly drank from his cup, his turned out to be water. Which I thought omg!!!!! Am I imagining things or is he trying to poison me? I couldn't put it past him, but this would be extreme. If I die then what? Would my children be happier? Would they find life easier? What happens to them. Most men simply move on, I know he'd remarry simply to put the children on someone else. He says he's quite aware of my every move, and I'm more than certain of hidden cameras stationed in various locations within the house, but to attempt to kill me???? Would he do it? Or am I truly just.... May GOD save my kids, no matter what.