help đŸ˜« idk what’s wrong

so, i’ve been on my period for 17 days now. i just started my birth control when my period started (so 17 days ago) and i’m unsure if this is normal on birth control or if i should be worried.

there’s no bad “symptoms” like cramping and stuff but i am getting nauseous more easy, i always feel full but also hungry, my breasts hurt, and i have a headache most of the time. what is going on??

note: i take my birth control on time every day and the bleeding is light-regular which is odd seeing as i normally bleed a decent amount. sorry for the tmi