NuvaRing

Anais
Been on the NuvaRing for two months now. I'm suppose to leave it in for 3 weeks and take it out on the 4th, so that I can get my period. So far both I start bleeding in the 3rd weeknot a lot but very lightly (not spotting tho), & then I get my period a few days after taking it out(medium-heavy flow). Is this normal or okay? Or should I talk to my doctor about it?