There is a belief that I operate under that can explain one of your questions, as well as any question related to it. Your question was, "Is this my imagination or can this really be my guides?" Here's the lowdown on reality:
Everything is real. What you think, what you see, what you imagine, what you feel, is all real. Its all real because everything is connected. Every atom within your body is within a molecule, every molecule is within an organ, every organ is within a body, every body is within the air around it, every bit of air is within the atmosphere, and the atmosphere is within the universe. In truth, nothing separates any of this except your belief that it is separated.
As if you were reaching out to grab a doorknob, your mind may reach out and grab other thoughts. Everybody does it, on a daily basis, but any strange thought or abnormal experience is usually excused away and never explained. However, the reality is that anything can happen, and for those of us that truly understand that, reality is much different than the way conservative minded people view it.
So, what you experienced could very easily be your guides, and you already answered you own question. The way to know if these are your guides is how they make you feel. Emotion is one of the best indicators for interpreting your guides. If you feel positive, those are your guides, if you feel negative, they're not. Simply tune out any negative messages and only pay attention to the positive and you're well on your way to understanding how to be a happy person and also how to get REAL guidance. Of course, you may always check out Letter#14, Letter#26, and Letter#35 regarding how to contact your Spirit Guides as well as God.
Love and Prayers, Shay
P.S. I have never heard of angelite. However, I tend to believe that after blessing anything, it possesses more Love than before and can only help you.