Your latest family doc said you have a nasal infection, and you yourself said
you have alawys struggled with
allergies and sinus issues. I personally think
you have a raging sinus infection, which gave you all those dizzy symptoms, and then it drained down into your tummy, and your digestion got all goofed up. And since you reported last night that your head symptoms returned, this suggests you're going to need some hefty treatment to get rid of the problem.