implantation bleeding????? help ladies

my cycles have been very irregular the past 2 months i believe due to antibiotics . i also had to take some this month so i was sure the same thing would happen . well now im having pink creamy discharge with no cramping or anything i was so sure it was my period and i keept trying to push to see if blood will come out and nothing should i test ??? i was having the worst boob pain in my right boob it was like this electric shooting type pain idk help ladies