I had a scare yesterday, keeping in mind I do have an anxiety/panic disorder and have been going through a (Doc approved) medication dose change since I have been doing really well for a year. I was tapering down by only .5 but I got much worse during TOM so I recently went back up...which I am very depressed about.

I cried all day Tuesday having to face defeat.
I was jogging at 5.0mph and after about 2.3 miles I decided to walk. Once I started walking I suddenly felt weak/faint...kind of like when you're coming down with the flu. I went into the locker room to sit and thought I just need a minute but when I stood up I felt light-headed again so I got scared and went home. I live a block away.
Again, I do have anxiety but I have never felt that before. I can only assume I hadn't eaten enough yesterday causing low blood sugar and/or they say sometimes if you suddenly stop rigorous exercise your heart rate drops fast while the vessels are still dialated causing a faint feeling due to less blood suddenly not getting to the brain. Your brain and body aren't on the same page for a minute. Also...I have stress...which you've all heard about ad nauseum for a month.
I just hope my heart is ok since everything I read says not to worry as long as you don't feel faint
during exercise, they said immediately after stopping exercise is not uncommon. My heart wasn't doing anything irregular or racing.
I have a specific heart health phobia so this incident didn't help. I had an EKG in 2009 and they said my heart is fine, and I can only assume that my heart is even better now since becoming athletic in the last year or so. Still...now I am nervous about jogging again.
Bottom line; I shouldn't have messed with my medication right now. Once the barn door opens even a crack with anxiety it's so hard to shut it again.