I woke up with a slight headache.

我醒来时有点头痛。

《牛津词典》

I have got a slight headache.

我有点轻微的头痛。

youdao

I have a slight headache.

我有点轻微的头疼。

youdao

People may also have a slight fever, headache, stomach cramps and aching limbs.

BBC: North West Wales

David Herbert didn't think much about the slight headache he'd been having for a week and a half.

FORBES: Taking on a Monster