Sounds like you're falling apart Andy..
but seriously, a swing from 3.2 to 14.1 is quite a jump. Did you eat something to correct the hypo and overdo it?
If you're turning yellow then you should see the doc. Could be nothing but you should certainly get it checked out. Dry skin is quite common as a result (I think) of a lack of nutirents, perhaps oils, in your diet. I had a problem with this a while ago and took flax seed capsules and it went away. Nothing wrong with moisturiser by the way.
Not downhill no - but perhaps a little bit of uphill work to get yourself back on an even keel.