Hi, I just read your post and I want you to know that what you are experiencing is totally normal. A couple of years ago I had a baby and shortly afterward I began feeling anxiety symptoms. I started having panic attacks for no reason...And on a daily basis I was feeling nervous. Worst yet, I had the symptoms you are describing. The feeling of "make believe" like you are dreaming. I could never explain it to the people around me because they didnt understand.
I finally went and saw someone for it, and it turns out that your body goes into defense mode during anxiety. It's called "depersonalization". This is very common to anxiety disorder. I started taking lexapro, a very small dosage. I was on that for a couple of years and when my insurance ran out I had to switch to citalopram (celexa). Both have worked for me. I still have anxiety and an uneasy feeling in my stomach once and a while. I have learned to accept that it's just my anxiety.
Thankfully the depersonalization went away. Best of luck to you and please know that you are not alone.