Bleeding after birth control

I’ve been on the NuvaRing over 6 months , I’ve had NO period. (I keep it in 4 weeks & put a new one in the 5th ) to skip my period

I started slightly bleeding recently, which I guess is called breakthrough bleeding.

I completely took my birth control out & haven’t put a new one in.

Which I seen started my full period. How long you think this is gonna last.

I started bleeding Monday ,