First may I say that I totally understand how you are feeling, and that at times I believe all Christians go through this. It is important for us to understand, however, that faith is not a feeling. Trusting that the Lord is always with you is a part of faith. While it is difficult when we "feel" that God is far away from us, He has given us his Word and His Spirit to comfort us.
I think that Psalm 22 will be a great comfort to you. In this Psalm David is struggling with feelings that God has rejected him. As you read it I hope you will see that though David feels that God is not near he continues to trust in God to deliver him.
No matter how our human feelings are, we need to remember that God is above our feelings. Feelings change, God doesn't. ;) I hope this helps you and I will be praying for you.