Birth control&pregnancy 👽

I started continuous birth control almost 2 months ago after having my first pp period. We ended up having intercourse about a week after I started birth control. Since then I've gotten a ton of acne( I never use to), I have mild cramping, spurts of nausea. I've also noticed bad headaches after drinking ANY amount of alcohol. Has anyone experienced this? I was having badnausea from pills so switched to the ring and it's not suppose to effect my stomach.Is it just my body getting use to the hormones or could it possibly be pregnancy?