NEXPLANON

I got my nexplanon put in on April 27th of this year. I had no bleeding at all in May. June 1st I started bleeding, heavier than spotting but not as much as a period flow & here we are 21 days later and I'm still bleeding, the flow hasn't changed the whole time. Is this normal? Should I see my obgyn? Anyone else have a similar experience or problem? Thanks!