You could have low blood sugar. Have you tried eating a cookie or breakfast bar when you feel like this?
I used to feel weak in the morning too and oddly enough, the only thing that helped was high protein foods. So, when I was out and about I started carrying snacks high in protein with me. Kashi granola bars were a favorite. I also loved chocolate milk because it had good protein AND carb levels.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.