You need to call you ob an see if someone can take you to the er there is a chance that you are dehydrated and need fluids. I get lightheaded when I'm dehydrated or my blood sugar drops.
I would call your doctor... If you feel that something is seriously wrong, the doctor is the FIRST person that needs to be called. Not posting on this forum. We are not doctors, just pregnant women here for support!
I've been feeling like that how far along are you