Random bleeding

Keni • 23- 👶🏽DET 9/24/19 💜

I have the mirena and I still get my period, but I also get random bleeding all throughout the month. It happens every so often and it's enough blood to where I have to use a pad. So is this my period? And is there anything I can do to stop it?

Another thing, if I bleed after sex is that something to bring concern to my doctor?