One thing I learnt from my own bends experience is if you feel ill after diving and it does not go after a couple of days, go to the Alfred and get checked out. It's not worth the hassle.
My buddy and I got bent a few years back but I didn't know I was bent until he called me and told me to go to the Alfred. Our dive profile was 18m Eliza Ramsden, 6.5m sub swan island?, 12m popes eye newbie dive.
I went to the Royal Melbourne hospital to be told pretty much as you did - that I was just run down and my lack of balance and coordination was ear related. I was subsequently sent to the eye & ear hospital and told that all was good.
Nausia, the worst headache of my life, lack of coordination, vertigo etc were symptoms.
Try driving a small truck around the long sweeping bend of Brunton Avenue around the MCG....bouncing off the curbs the whole way is a sure sign the something is wrong! :)
I was in the chamber the day after visiting the Alfred (2 weeks after the dives) and was told I was not allowed to drive until treatment was finished.
It only took 2 chambers dives for my decompression so I was lucky.
I was also lucky that I didn't kill myself or someone else with the truck.
Cheers
Pete