[Awakening]
Awakening is the term commonly used to describe the coming into or realisation of the vampiric state
Typically, the process begins around puberty, though can occur later, making an already confusing time even more so as you try to struggle with all that naturally occurs then, and the added feeling that something is 'missing' you are 'incomplete', You want something but you don't know what it is, you can stuff yourself and feel totally empty and unsatisfied. It's instinctive you just know your different
Some may also find that that the way they think becomes more aggressive and predatory, extreme mood swings and depression affect the majority, noise, smells, light can become overwhelming (see 'so you want to be a vampire' for further experienced vampiric traits) Here's where you have the confusion, these mood swings, finding yourself with greater strength [especially for the guys!] insommnia etc, can be quite normal with all the hormonal changes of puberty and not absolute pointers to vampirisim. Bear in mind also that every individuals experience will differ and not all 'symptoms' will apply, there are no established patterns or definates when dealing with the vampiric.
*Be wary of anyone claiming they can tell you if your a vampire, or any other kin when asking for any kind of clarification, that's pretty difficult online and their intentions may not be all that innocent, it's all to easy to manipulate someone who's vunerable, unsure and all to eager to have someone who understands what they are going through.
Only research, reading and self exploration will lead you to your own conclusions*