By the time he'd gone to bed, his head was swimming.

Simply put, her head is swimming with all this information.

When I looked at her again, my head was swimming with all that we'd seen and done together.

His head was swimming, but he didn't think that would last for long.

In fact it seemed my head for a moment was swimming.

Her head swam at the idea of something more to learn.

My head was swimming and I felt very tired suddenly.

Her head swam at the thought of all those taxes.

The walls of the room seemed to close in on me, my head was swimming, and I felt sick.

His head only swam a little and he didn't cough.