Alone in a Big Bed

Just ended things with my husband after three years. We moved into this house together and it's his idea of an 'adult bed', king size, empty now. Tonight was the first night I couldn't sleep, so I went downstairs and saw him online late. He’s not cheating; just reaching out to old friends, which stings more somehow. Feeling desperate, I came back up with a bottle of wine and started touching myself in the dark. My fingers slid over my clit until my body jolted and wetness pooled, needing release so badly I bit down on my pillow when I came. Anybody else ever been this needy after a breakup? Am I just overreacting or is this normal?