Minastrin 24 Fe SIDE EFFECTS

I began this BC about 2 weeks ago and it made my period last 2 days longer than usual (which I can understand because my body is adjusting) but how long does it usually take for the spotting to stop? Also it's been a couple days since my period ended and I started getting brief cramps as if my cycle was starting over.. Is this normal? Anyone want to share their experience with this BC?