Binge drinking Friday, now I feel odd, why?

I normally drink about 1-2 beers or glasses of wine a day at home with my family over dinner and afterwards. I took a week off of drinking or so. Then last week I had 2 martinis on Thursday and on Friday I had 5 beers (microbrew) after dinner in addition to 2 weak choladas before dinner (half beer, half Margarita mix).

Well I didn't even feel that tipsy on Friday after my first 4 beers so I had a fifth beer, but as I chugged that one down, all of the sudden I went from feeling very lightly tipsy to just plain sick. I am confused. I never felt drunk, just went from a tiny bit tipsy to sick on that last beer. To make it worse it was a dark beer so it just sat there on my stomach like a ton of bricks and I got sick because of it.

I slept for 5 hours, then had sips of water the next day but I was worried, even though I was probably dehydrated, that I would upset my stomach with too much water.

Later on, I felt I had abdominal pain just below my belly button on my left hand side. I felt my left abdomen was throbbing! The odd thing was, I think it WAS throbbing because I set the remote on it, and it would lift up and down, showing me that I was indeed correct about throbbing in that region.

My past medical history includes dehydration due to stress which has led to chronic UTI. These have been treated and dealt with. I also am on an IUD and have had a prior condition with ovulation cysts on the ovaries (benign but they swell very large when I ovulate). I also am on medication for mood disorder (divalproic acid, and lorazepam).

Anyway, my question is why does my lower left abdomen feel so odd? It is throbbing, and I have also had some shooting pains also in my abdomen when I twist around in bed. I am naturally concerned it's fatty liver but I wonder if those shooting pains sound like something associated with that. Or maybe it was just indigestion from all those dark ales I drank.