Colonoscopy Prep

Hi guys. I've been putting off a colonoscopy as long as I could, but despite being relatively young (early 20s), my doctor is basically requiring it 😭 I'm so so so terrified. They're having me take Gatorade, Myralax, and dulcolax. I get so grossed out by feces in general) I can't imagine going d* WHILE having to drink my prep in such a smelly and gross bathroom) so I'm already concerted about v* due to that, but I'm terrified for the dulcolax. I've heard it causes n* and v* and it did for my mom when she took it which makes me scared because I get n* way faster than she does. Due to my weight, my dr said they're giving me the prep they give for kids but it made me feel worse because my mom also had that prep and v* anyways. Does anyone have advice on how to get through this? I'm so miserable with my current GI symptoms so I know I have to just get it done, but I'm so scared and have been crying all day since finding out

Edit: you all have made me feel so much better and I love this sub more than I can explain!!! Thank you guys so much. I will update this sub after because I'm sure we all would rather not go through a colonoscopy :)