Should I Get a Colonoscopy?

So I got really sick on April 1st I battled with nausea and vomiting for the whole month and still continued well into may….it’s now June I’m feeling a lot better but still have times where I feel nausea my gi doctor wants me to get a colonoscopy I’m terrified of being put to sleep and the fact I’m feeling better makes me want to skip it all together plus I’ve lost faith in our medical system beings tho I’ve been told I’m fine multiple times is the colonoscopy worth me getting or should I ride it out and see if I continue to get well