Terrified about my new job! Changing adult diapers. Advice?

I recently got a new job after being out of the workforce for about 2 years. I’ve been battling severe depression and anxiety and borderline agoraphobia. I’ve been doing therapy, self care, going to the gym, and other things to improve my well being. I can’t say I’m completely healed but I’m in a much better place now. I’ve been blessed enough to have a partner who can financially support us. But recently his income changed drastically and we are living paycheck to paycheck. I’m tired of feeling sorry for myself and I can’t stand feeling like a burden to my partner. So a few panic attacks later, I’ve built up the courage to fight my own demons and apply for a job using my unused degree. Luckily, I was able to find one quickly and I’m already employed 3 days after applying. My start date isn’t until a couple weeks from now since I have to do drug tests, live scan, physicals, etc.

My new job is to work at a day care for adults with disabilities ranging from autism to epilepsy. I never thought I’d be able to get out of this funk and get a job. So I’m proud of myself for going to the interview and acing it, let alone even applying for the job. Things that would give me panic attacks just thinking about it.

I was feeling great about everything up until I found out I will have to change and wipe some adult diapers every now and then. It won’t be a daily task but it will be required of me. Most of the adults can do it themselves but there are a few severe cases. For some context, I have a super weak stomach. I gag at bad smells which leads me to vomit. In fact, I actually did vomit at just the thought of cleaning an adults bottom. But I don’t want to make excuses anymore. I don’t want to let my fears ruin opportunities for me. How can I over come this? Any tips on how to toughen my stomach up? Is this something that I could improve? Or is it something that will always trigger my gag reflex? I just want to know if it’ll get better. This job is the perfect schedule with decent pay and it’s a 5 minute drive. Not only that, I see how happy and relieved my partner is that I will be able to help out now. I don’t want to let him or myself down :(

In short, is it possible to strengthen a weak stomach? Does changing adult diapers become easier?

EDIT: Thanks for the tips! Although I am still nervous, you all have made me feel encouraged knowing it gets better. This is a small portion of the job so I should be ok. I will definitely use vaporub & a mask/gloves. I know to use “brief” instead of “diapers” now. I will think of my client as if it were me or a family member. And I will treat them with dignity. Thank you again for sharing your experiences and being so kind to me. ❤️