The pill rigevidon

Louise
Does the pill mess up your periods slightly ? I came of the pill had my period and now I'm back on the pill and I'm having weird bleeding 💧 I bleed a little bit don't bleed and then bleed a little bit more(just little bits) and then don't bleed. It's weird ? Any idea anyone ? 
Ps. I missed my period before this one because I didn't  come off my pill to have it could that be the problem ?