Idk what to think

Last week I received what I thought was my period but it was 3 days two days of spotting and one day of light period. I told my doc and she said it's not anything she would be concerned about. Now as of yesterday I started bleeding again but this time I have cramps and it feel like my normal period symptoms. So what was last week? Ugh I am waiting for my doctor to call me back. I hope she send for me to get some test done to ease my mind.