Implantation bleeding

Mariah • wife and momma of 4 beautiful girls
Hey girls so I was on an iud from December 29 2014 to may 27 2015 me and the hubby did it that night and June 1st the 8 yes we are trying for another one but I am suppose to start and I have been having brown spotting on and off and cramping so we don't know if it's implantation bleeding or what help please