Is It Written or Wrote?

Here is an essential overview on Is It Written or Wrote.

We use have had in the present perfect when the main verb is also “have”: I’m not feeling well. I have had a headache all day. She has had three children in the past five years.

When to use have had together in a sentence?

Have you always had hay fever? ~ I’ve had it every summer since I was 13. Thus, your example sentence, Sazd, I’ve had a headache since early morning, is quite correct. Had had is the past perfect form of have when it is used as a main verb to describe our experiences and actions.