i haven't had that sort of eye issue, but it sounds like a possible thiamine deficiency. the vision problems... and that flickering in particular sounds like Nystagmus. which can be related to many different issues, but if you have a really limited diet or some GI complications, thiamine could be a factor. the pain you've experienced could tie into that idea also. seems significant to me also that it got worse after you had a drink, because alcohol drains thiamine too.
i know it's only wikipedia, but read these it's a start
(a little video)
http://en.wikipedia.org/wiki/Wernicke%2 ... phalopathy
i've had the throat problem. there were three parts to mine. occassionally, my tongue would get frozen half-swallow and i'd be sitting there with a blocked airway trying to finish the swallowing motion (dysphagia). another issue was feeling like i had a tennis ball stuck in my throat that i had to swallow around (Globus pharyngis, apparently). i had significant improvement from taking magnesium. but i still have a bit of the third problem, which is feeling like my spit is going down the wrong way. i clear my throat too often. the tennis ball and the stuck tongue are gone though. whew!
i think it's very important to mention all of this to your doctor, first to find out what it is, and second because if you have any nutrition issues or general health issues, it will certainly affect the health of a developing fetus. i would hope the doctors would be appreciative that you were doing all you could to ensure that your baby has the healthiest possible mom to grow in!
i'm going to go scout for a link or two that i posted recently somewhere on here, might also be useful for you to read. take care