What would you class as a persistent headache?

Jessie • Mum of 1, another baby due in may 2020

I’ve had a headache since Saturday night. I’ve tried paracetamol, a cold compress on the forehead and neck, saline nasal spray (I feel congested). I don’t want to start worrying about preeclampsia etc as I don’t think I have any other symptoms, but this headache is really affecting my sleep and day!