Am I a diabetic?

I have a family history of diabetics in my family but only 2 that im aware of. im really sleepy alot and i have really bad cravings for like sugar which is kinda weirdd. im always thirsty no mater what and i do use the bathroom alot too. also over like the past dew weeks ive been losing and gaining weight all the time! like one week ill be like 105 the next like 112 and after that like 101 ! im kinda confused and nervous about why all these things are happening... help! also im 14 years old.