Hope,
It is a spirit filled gift and if we can leave aside the question of the spirit, I'll relate my experiences.
There was time when I was born again. It seemed every week had an epiphany of rediscovering my faith. Strange things happened to me. All I read was the Bible and growing tired told God, sorry I've got to put this aside. Off I went to the book store and bought what I thought was a science-fiction book. Back in the room I discovered it was Hal Lindsey. - I had a real awakening.
Being aware of the gift, I had never heard tounges but I knew it was frequent amongst the born-again. I continued to read and added other sources of Christian learning. One day, alone in my apartment, I went to go inot the bedroom. Just in the doorway, I started to speak in tounges - a prayer to God. It was lilting and musical sound although not sung. I couldn't understand the words but I knew it was praise of God to God and he understood.
Subsequently, I heard for the first time tounges spoken by another - it was at a fund-raiser for the first Christian cable TV network. It was guttural and harsh and required a translator. I remember thinking that why did this message from God for all in the assembley need to be translated as it was. The message was for all not just the one doing the translation.
How do I reconcile these experiences and others with my Atheism? I still see spirit filled Christians - I see them overflowing with spirit, enthusiastic, loving , joyous. But I don't see them with Spirit I see them with spirit. That is a central part of thier life whether spirit is capitalized or not.
Is your Spirit bogus? NO, not in my mind. It is the mark of commitment and gladness in the commitment to holding and cherishing your faith. Glory in it, Girl. Keep it warm and part of yourself as long as you profess faith in God. I'm happy you have the Spirit.