super confusing lines and periods

I had a super weird period not at all like my usual ones way lighter than normal and pink and brown then next month had it again my ob doesn't seem concerned but I feel gross all the time by boobs starting aching again even though I'm breastfeeding they haven't hurt for months! Almost late for my period <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> says in two days but I always start2-3 days before the tracker says I actually will