Help side effects question

I started taking the pill jencycla 11days ago & I had just finished my period then 3 days ago I started again but this time it's really really heavy, last night I bleed on my bed twice Tru the night, after the 1st time I put a tampon in & wore a pad to be safe & still bleed everywhere is this normal I've never taken the pill before so I'm not sure what to expect but my normal period where regular flow. Also my baby has gotten hard lumps in her nipples sense I've been talking it?????