Pregnant or ?

bella
So i started yaz for only 2 weeks then get off of it because i wasnt liking the way it was making me feel. When i get off of it 4 days later i started getting very nauceous the chills a fever then it would go away. Then the next morning i was very nauceous and i had bad cramps and brown light blood on my panies and when i wiped. Is it because of the bc ?