To test or not to test...that is the question

-March 28,2015-last period 
-cycle day 79
-45 days late 
-negative HPTS a few weeks ago 
-postive opk on May 28,2015 
-sore nipples the past week 
I've posted before but never get a response but I don't know if I should test again or wait it out 
I've never had this problem. I'm always regular. Never been on birth control and there's been no other changes in my life