lighter period

on the pill is totally normally to get a lighter and shorter period..right..? <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> noticed I've been logging light alot and told me I should check with my doctor. before the pill I was having 6 days if extremely heavy bleeding. Now I get 4 days of light to medium bleeding. I'm good right ??