Could I be pregnant???

ashley
I spotted on July 10-13 but I haven't had an actual period since end of May but it's normal for me to miss two periods in a row cuz it normally comes by the third month , it's supposed to be due August 3-9 . But could have been implantation cuz I'm 27 days late from my last expected period and no sign of it at all . When would be a good time to test ????