My Btt and opk tests

I've been ttc for 6 months for 3 of them months I've had egg white on day 11 and a postive opk I'm 34 and have a 25 day cycle please can anyone help me just I've notice eggwhite on day 5 but only got my opk postive on day 11 and by day 14 I've ovulated for the last 3 months but this month I noticed eggwhite early and before my positive opk test any one help could this because I've a in regular period just it I'm on a 25 day cycle and not a 28 day cycle could this change my Btt was perfect it said I ovulate closer to my period than the 14 days please help