I was sure I OV last month as had all the symptoms but no AF and plenty of BFN's! so can only presume I had annovulatory cycle. Have just started taking agnus castus to regulate my cycle and using OPK's. Dont know where I am in my cycle so have taken 1200mg a day for the last week. I test with OPK's every day..late afternoon and so far they all seem to show a pale pink test line. Each day the results have the same depth of colour. Sorry to ramble on! but can anyone tell me if its normal to have no variation in shade of pink? lol! As i thought it varies throughout cycle.