sorry to hear you're having these troubles esp at this time of yr. i can't say whether or not you'll get an ms dx. all i can say is that if there's room to improve your lifestyle including activity level, diet and nutrition etc, it can only get better. so that said here's what i can offer on the points you have highlighted.
so. plantar fasciitis first. i know that i had one before, that i went on a major nutritional overhaul, that it went away, and that it is back to some degree and i am not sure which of my many efforts had to do with the biggest improvement. i have read that anti inflammatory nutrition such as vitamin E and selenium can be beneficial. fyi choose E rich foods before any supplement, and if you choose a supplement ensure it is the very best quality. poor quality E supps can be dangerous. i would look at anti-proliferative nutrients as well. such as zinc. i also know someone who made some nutritional alterations in response to a similar problem and only noticed an improvement with a significant infusion of supplemental vit C. this person had low intakes of fresh fruit and veg, cooked, raw or otherwise.
wish i could find more science on the nutrition for this. but for now, that's all i got!
thyroid gain. you mean thyroid weight gain? hypothyroid? if so, i'd be looking at serum zinc first for that one.
re bone spurs, i would look at serum vit d3, calcium, magnesium and zinc status.
re hyperreflexia, that says look at serum magnesium as well.
if you post your typical diet including fluids, i can assess for potential nutrient depletion issues from insufficient intakes or potential nutrient malabsorption due to food combinations etc.
here's what i think about ms in specific and health in general regimens-f22/topic2489.html
my approach: no meds so far - just nutrient-dense anti-inflammatory whole foods, and supplements where needed
info: www.whfoods.com, www.nutritiondata.com