Anyone know what could be wrong with me?

So here's my symptoms which Ive had for about 2 weeks now. Can anyone suggest what could be causing these?



Very sudden extreme bouts of hunger. All of a sudden I will get an awful hunger pain like I haven't eaten in days.



Aching pains in legs and especially round the knee's.



Skin Breakout , Ive been on prescribed anti-acne medication for over a year and its worked perfectly until this week, Ive had an outbreak of under the skin acne lumps.



Ive completely gone off sugary, chocolate biscuit stuff (which I'm a sucker for usually) and have sort of 'cravings' for bread, cheese, sausage rolls and pizza.



This might not be related as Its practically constant for me but yet another outbreak of thrush. (but the worst ive ever had it)



( I have not recently changed my lifestyle or began any new medication or anything at all )

( I am almost 18 years old, female)

( due my period in 2 days - thought i'd let you know as I am considering pregnancy as a possibility)Anyone know what could be wrong with me?
Assuming that you are not pregnant, get your sugar levels checked.