How do I know if I have absence seizures?

I have idiopathic generalized epilepsy. I've had TCs and a lot of different types of focals, but how do I know if I ever had or if I currently have absence seizures? I've always been told since I was a child I was always daydreaming and now I'm wondering if those were absence seizures. I guess everyone daydreams and becomes absorbed by their thoughts and disconnects from what's happening around. But how do you know the difference between that and absence seizures?