implantation bleeding or period?

So 3 days before my period was due I started bleeding lightly it was darker red but it was very light like almost not there but wen I'd wipe I could see it. Then two days later It turned into spotting but it was bright red (had sex before i noticed it was red) an now there is nothing there my period is very irregular but it's always been a heavy cramps horrible time an this has been light cramping an back pain. So should I test or jusy count that as a period?