We've been TTC 12 months, did an OPK just now as have had some pains thought felt like ovulation but can't be sure. Not done one before. Got an error symbol flashing, so took stick out of tester. It has two blue lines on, does anybody know what this means result-wise? It's a clearblue digital ovulation test. I can't wait 4 hours to do another one! Suspense too great. Thanks in advance