Is it normal for it to change like that?

I always get like the worst cramps during af, i usually just lay down trying to get comfortable, eating pain killers, i also throw up because of the pains. 
But this month, my period was 2 days late and i don't feel a thing. Im on day 3 of my period that is usually 5-6 days. And the flow is normal, light at first, heavier the second day. Then it gets lighter and lighter. 
So a normal af for me. Excep the pains, i don't feel a thing, i've never had a period without pain. Is it normal for it to just change like that? Could it be something wrong? 
Just wondering and hope that someone has an explanation🙏🏻

Vote below to see results!