NEED HELP ON THIS ONE!

To
I got my period 3/3/16 and it lasted until 3/8/16 the next day I started with some brownish pink discharge (yes, the day after my period ended. weird I know!) and that lasted about 3 days. Tonight my fiancé and I had intercourse and afterwards I noticed that the fluids had A pinkish tint to them. Could this be implantation bleeding?