Birth control

Asha • Snapchat @boltasha

So about a month ago, i started birth control ( Junel Fe 24 ). I been nauseous a lot and hungry a lot. On week 3 i spotted the entire week. I had headaches in the beginning. According to the app i am 4 days late for my period. ( I’m not pregnant I already took tests lol ) Is there anyone else on this too? I would love to know if this is a normal reaction when starting birth control .