Struggling with anxiety about an upcoming doctor's appointment and OCD.

Hi everyone! I have severe contamination OCD, and the worst of it involves fears of my beloved 12 year old dog getting cancer later in my life due to my actions. I was recently exposed to secondhand and thirdhand smoke and as a result, I have avoided seeing my dog for over a week now. I have been struggling with this disease for a very long time and it has only gotten worse over time. I also have other contamination fears such as just being a gross human due contact with bodily fluids or not cleaning my body adequately. I feel that some fears are more anxiety provoking and worse than others. For example, I regularly take 2 hours showers. But with my fear of bodily fluids and being gross, I feel strong enough to begin ERP therapy. Because the worst case consequence is just me being gross and embarrassing myself, but nothing more severe. With my fear of my dog getting cancer due to direct or indirect exposure to harmful household products, situations, or environmental toxins, I have not been able to convince myself to start ERP therapy. This is because I know that it involves accepting uncertainty or the small possibility that my dog might indeed get cancer due to my actions, and I just can't bring myself to accept that without performing the compulsions that I think will help reduce the risk (e.g. cleaning my clothes, car, avoiding him, etc.). If someone truly loves their loved ones or pets, I don't understand how they are able to just put this fear and the very real risk of it happening aside. Even after doing ERP therapy and accepting potential exposure to harmful toxins/situations, it is not as though I will see that nothing bad has happened to him and find relief, because my fear of him getting cancer is a long-term consequence, something that will happen near the end of his life. I desperately need help but I feel that ERP therapy goes against my values, who I am as a person, and would mean that I'm intentionally ignoring the signs that my dog is in harm's way. It almost feels neglectful to me. I feel that I am bound to keep suffering the way I am. And therefore I feel stuck and paralyzed. Any help or advice that could frame the situation a different way or show me a different perspective would be much appreciated! I keep reading that for ERP therapy to be successful, one must believe in better outcomes as a result of it, but I am just not convinced. Thank you for reading! Much love to all of my fellow sufferers <3

i'm so scared to start erp as someone with contamination ocd and i honestly get so scared that it's not going to work (for me) because i genuinely can't imagine my brain not feeling like germs are scary and are gonna hurt me. like tonight i freaked out because i felt like my clean clothes touched my "dirty" shirt as i was switching over the laundry and it literally sent me into a panic attack about how hard it is to struggle with this. like how will i never find that as a threat? how will erp help that like will i have to intentionally wear dirty clothes? i'm just scared.

I have contamination OCD. How am I supposed to do ERP when I feel like there’s poison everywhere? I can’t live like this anymore but ERP is terrifying to me.