I had my period on 11/10/16 had sex on 11/29/16 my period 12/04/16 but its very light only needing one pad when I usually bleed moderate to heavy needing 4-6 pads.I did have an ectopic 6 months ago with only left tube removed. Have a little discomfort on right side but not bothersome.what could be going on.been trying to get pregnant since September