That sounds
exactly like hypoglycemia, the most obvious case i've read on here. All of those symptoms are very typical and a classic example of what it's like. Because it's common in your family, there is pretty much a 100% chance you have it, it's not as rare as they say and you don't need an ssri or therapy. Granted, these things may help you, but i've found that after eating right all of my mental symptoms became much more manageable over time and I slowly learned to get rid of them myself. The reason the huge meal caused a problem later is thus:
1. You ate an assload of sugar. As the pancreas shoots out insulin, there is still enough there to keep the sugar level fairly constant until it catches up with you, and therefore you feel like crap a few hours later.
2. You don't feel bad when you wake up because your body doesn't have any food in it to cause the drop. The problem is obvious, you have reactive hypoglycemia. What this means is simply that your pancreas oversecretes insulin in the presence of too many carbohydrates or simple sugars. Thus, you
should not be eating or drinking any of those things you listed up there, none of them! Over time the symptoms will get worse if you don't follow a proper diet.
3. Speaking of which, what kind of diet did they put you on? I bet it sucks, but I hope not for your sake.