Could I be?

I started to continous pill in February, throughout Feb, March and April, I had continous bleeds. I took a pill late on 2 occasions.

I've now not had a bleed for 42 days, my breasts are sore, I'm tired and I've been cramping loads for 3 weeks. I took a test about 2 weeks ago n it was negative.

Could I be pregnant or is it just me body adjusting? I'd have expected the bleeds time reduce gradually but has anyone experienced them stopping all of a sudden?