Postpartum headaches

Wondering if anyone else is suffering from this. It’s at night when I’m asleep I will wake up to a severe headache and it’s in the back of my head like the base of my skull and my neck too. It is very intense for 10-20 minutes or so then eases up and I go back to sleep. My doctor thinks I need to drink more and rest more which I probably do but I just feel like it’s so weird and so intense and it’s a strong throbbing sensation. She said she wasn’t super concerned about it but that if it doesn’t get better I can get imaging done.