Feeling good, but I need a little advice about the body and thoughts

I am feeling pretty good. Life doesn't feel fake, but I still have some thoughts and anxiety to deal with and it's strictly about the body this time. I have been taking viibryd and am on week 2, so I still have time until I see if it works for my anxiety and thoughts, but I'm hoping someone here can help me deal with them until then.I am stuck having thoughts about why we have a skull, heart, brain, why I can't feel these things and how they are always working, can't I just take my brain out of my head, etc. It is stuck on my mind 24/7 for the past few months and I have not been able to figure out how to get used to accepting that we need the brain, heart, skull etc and that it needs to be where it is while working 24/7 and not something to fear. Anyone else having these thoughts and know how to help?