should I be concerned?

hi ladies. I just had a baby on April 3rd. I bled for about 4 1/2 weeks. Then May 14th I started bleeding again that lasted five days, so my doctor believes that was my first true period after baby. Well I had light bleeding again on the 22nd, just lasted for the day. Then medium bleeding started the 25th and hasn't stopped. Is there anything i should be concerned about? I know bleeding is inconsistent after having a baby, but this seems really odd to me.