OPK High 4 days early!

Vicky

Hey ladies,

I'm a little confused. I finished my period on Sunday just gone. I have been testing for ovulation using Clearblue advanced just in case my cycle is out as my period was very bizarre this month. According to my charts I'm not predicted to ovulate until next Wednesday. I did a opk yesterday and it was low. Today has gone to high. My ovulation has changed! I'm now worried I'm missing my window as I don't think I'll be able to bd with my hubby until tomorrow morning as he is out tonight.

Is there anyone on here who knows why have I suddenly ovulated early? My cycles can usually be pinned down and predicted to the day or just before!