I don't go to the bathroom every day?

I'm 12. I consume a lot of cheese, but I always have healthy foods (vegetables majority of the times broccoli) everyday and fruit sometimes. I eat pasta (pasta and cheese) like everyday. I just, don't unload the dumpster every day? okay, that was me being funny, but I don't take out the trash? use the bathroom everyday?. I usually go twice a week. I hold it for about 3-4 days... I resist using the bathroom sometimes. It just makes me feel so nasty and vile and informal. I got an endoscopy last January, and had been diagnosed with stomach inflammation. I often end up clogging the toilet, and have to use bleach and baking soda (ik you're judging me). How often is a person suppose to do their business? don't tell me I have IBS. Plus, eto, how can I lose this feeling of nastiness?