Oh and Im not constipated at all.... in fact im more on the diareah side.
Definitely not normal. Your weight is definitely worrisome. I have to mention that stomach problems can be associated with underweight people.
You need to contact your doctor first thing in the morning.
I agree with joyrenee, although when I got pregnant with my first son I was 130 lbs and I am 5'8" and I lost 20 pounds in the first 6 months because I couldn't keep anything down. Your doctor can prescribe a medication for morning sickness.