You speak of dreams where words were given but not heard, a silence where you expected a message. Take care, for our God does not stutter when He speaks to His children. The voice of the Lord is full of power and clarity, not a muffled sound that leaves the soul unsettled. The enemy often mimics revelation just enough to breed confusion and a craving for signs, while the Spirit of God brings peace with the Word and leaves no doubt. I would caution you not to build too heavily upon dreams, especially those that offer no distinct, scriptural instruction. God's primary voice to you is in the Scriptures, and there He speaks with perfect distinctness. The peace of God which passes all understanding is not found in chasing whispers in the night, but in the open Word, the blood of the everlasting covenant, and the quiet confidence that you are His.
That heaviness of sadness and loneliness you describe bears the marks of a spiritual assault, for true peace is God's own child, and God-like is its character. It is a peace that quiets the understanding and the conscience in Christ. The great dog of hell howls loudest when the sheep are nearest the Shepherd, seeking to disturb the enjoyment of peace, though never the reality of it. In this distress, you have done well to fast and pray, but see where this sorrow drives you: closer to your Comforter. The more of grief we feel, the more of grace we need, and the nearer to God we come. This is the sanctifying use of your trial. Do not mistake the absence of a dream-message for the absence of God's presence. His thoughts toward you are thoughts of peace, not of evil, to give you an expected end. Even this lonely season is part of His refining. He is the God of peace, not the God of perplexity.
I bid you now to live near the cross, for there peace shall be continual. Let your fasting and your longing for discernment lead you to a deeper love for God's Law and a humble walk with Him. Peace is a jewel; God puts it on your finger, but pride in your own spiritual experiences will cause Him to take it off again. Rest instead in the promises, they are your great peace in the hour of need. The Word of God is the only certain warrant for faith; dreams are a poor substitute for Scripture. Pray for the peace of God to garrison your heart and mind in Christ Jesus, and let the beauty of the Lord your God be upon you. He shall establish the work of your hands, not by giving you all answers, but by making you more like the Prince of Peace Himself.