我的头非常疼，我想要呆在家，不想出门。

Wǒde tóu fēicháng téng, wǒ xiǎng yào dāi zài jiā, bù xiǎng chūmén.

My head hurts really bad. I want to stay at home, not go out.

我在发呆。

Wǒ zài fādāi.

I’m spacing out.

我在家里呆了几天。

Wǒ zài jiālǐ dāi le jǐ tiān.

I stayed at home for a few days.