implantation bleeding

Hello all I am fairly new to this wonderful group and need some help. Last month my period came May 6th and I had my regular five day period. So these last few days my breasts have been sore and I've had mild cramping. Yesterday morning when I used the restroom and went to wipe I saw a very light amount of blood it wasn't the normal red color it was very light pink so I figured that my period was going to start, so I put a pad on and went on with my day. Through out the day there was no more spotting at all no blood like I was expecting and now it's the next morning and once again there's no blood. So my question is, could that have been Implantation bleeding? Who has had it and what does it look like?