list wide differential diagnosis for headach of 1 day duration for pregnant woman

1. Migraine headaches

2. Tension headaches
3. Sinus headaches
4. Cluster headaches
5. Dehydration
6. Pre-eclampsia
7. Hypertension
8. Anemia
9. Cervicogenic headache
10. Medication side effects
11. Allergies
12. Mental health issues such as anxiety or depression
13. Hormonal changes
14. Chiari malformation
15. Brain tumor (rare but possible)