Exhaustion from little exertion

I'm hoping my body is doing great things with the bone broth vitamins and minerals I've been consuming the last couple days.  Because all I can tell is that I'm dizzy and exhausted.  We spent the day at Navy Pier with my dad and it fully drained me.  Walking around and then cooking dinner should not make me this tired.  So I'm hoping that something is healing and that is where my energy has gone.  I just hope that I don't get as weary as I did in May 2012, because this timing would be horrible.  I did do yoga this morning before we left, but will not go on my nightly walk because I am just that tired and dizzy.  I pray that in the morning things will be better, for I feel now like I did when all of this started nearly 5 years ago.