It seems to me that you're looking rather hard for the number 666. For example, saying that June=6, and 26=2*6=66, giving you 6,6, and 6=666....... it seems like you're doing some mental gymnastics to get these numbers. I don't think you see more 666's than anyone else; but as J0A0 said, your OCD is making you notice them more. If you have to do math to get these numbers, you're probably looking for them (and it's not even correct math!)
In ancient Greece, the number 6 was considered a "perfect number" (that is, it is the sum of its divisors, 1, 2, and 3). Later, Christians such as Augustine believed that the number 6 was perfect in a theological sense. In his work,
The City of God, he said, "Six is a number perfect in itself, and not because God created the world in six days; rather the contrary. God created the world in six days because this number is perfect."
I don't know about that, but the point is, there is nothing in either the Christian tradition or traditional theology or mathematics that would indicate that there is anything bad, unlucky or evil about the number 6. Likewise, 666 and 616 are not evil numbers. It is believed that these numbers somehow indicate something about who the Beast of Revelation will be/was. But there is nothing evil about the number itself. Fearing the number 6 because it is associated with an evil person is like fearing the color red because it is associated with blood.
If God were trying to tell you something, I think he would do it in a different manner. The Holy Spirit speaks to us through the Word, and through our conscience. If God were trying to send you a message through these things, what do you think that would be?
I know it's hard, but try to ignore these things as much as possible. It's almost certainly nothing.

Hang in there!