"Fruity"-smelling urine....could I be prediabetic?

For the past 5 days, there's been a strong, "fruity" smell coming from my urine everytime I urinate. Being that I work in healthcare and have encountered this same smell before(in patient's urine), I know this could be a possible sign of diabetes. However, I am not diabetic, or at least I've never been told I was, and up until now, had no reason to suspect I could be.

But there's another reason for my concern: since the middle of October, I have lost 23lbs......and not because I was trying to(although I needed to). See, I have narcolepsy and require daily medication for it. Well back on October 11th, my doctor changed my medication from Ritalin to Adderall (adderrall), as I wasn't getting the desired effects from the Ritalin. Within 2 weeks of this switch, my weight dropped 7lbs...and has continued to drop at a rate of 2-3 lbs/week on average(from 179lbs in the beginning of October to 154lbs today, 12/22). I've also watched my appetite get smaller and smaller. Not to the point of starving; rather I'm just not as hungry or eating as much as I used to(the most I've been eating these days is 2 small meals and maybe a piece of fruit or granola bar in-between....but not much else). On the flip side, I seem to have a constant "thirst-craving", especially for Diet Coke of all things. Initially, I assumed this was r/t two things: 1)"dry mouth", which is another side effect of Adderall (adderrall); and 2) the air quality in both my house & at the hospital where I work is very dry. (Side note: the doctor who prescribes and monitors my Narcolepsy medication is aware of everything I just mentioned and said I shouldn't worry because these side effects are short-lived and will go away in time. Also, I never experienced any of them while on the Ritalin).

Another thing worth mentioning is that I've been taking an antibiotic(Augmentin) for a sinus infection since last Friday. And knowing that UTIs and yeast infections can develop as a result of taking antibiotics, I thought maybe I was getting one of them. However, in the past when I've had both vaginal and bladder infections, the odor given off by my urine was strong and foul-smelling......which is nothing like the current smell. And I'm not experiencing any other symptoms which are characteristic of UTIs and yeast infections. I do not have cloudy urine....in fact, it is perfectly clear and pale yellow in appearance. I am not having any vaginal discharge, burning upon urination, urgency or the frequent need to go, vaginal itching or discomfort. And I am not, and have not been, running a fever. Again, my only symptom is this "fruity" smelling urine.

As an FYI, when I got to work yesterday morning(Sunday), I checked my blood sugar using one of the hospital's accu-check machines. This was technically a fasting sugar that I was checking because I had stopped eating & drinking by 9pm Saturday night and therefore had fasted for 9hrs prior to checking the sugar. Well, the result was 112. And according to everything I've read, this is considered a prediabetic result for a person who is non-diabetic, or at least never diagnosed as having it.

So considering all this info, do I have reason to be worried & concerned? Could I possibly be dumping ketones in my urine due to the weight loss? Should I contact my family physician to get more extensive blood work done?