I get headaches a lot but since having my baby i get one when i wake up till bed almost everyday pain killers don't work i'm worried it's a brain tumour?

Tumor unlikely: Most likely, you have now chronic daily headaches, which could be secondary to migraine. Pain medicine makes this pattern far worse, and you need meds to prevent headache. Contact your doctor and choose an appropriate agent.

See neurologist: Rather than a rain tumor think migraine or tension induced headache.

Migraine: Hormonal changes can affect migraine headaches. These can be responsive to appropriate treatments. See a headache specialist.