Peak Fertility CD 8?! Is this wrong??!! Clearblue Advanced OPK

Amber
Hi guys... 
This morning Cd8 I took a clearblue advanced opk and it showed peak fertility. Is it me or does this just seem soooo early? It's my first month of using clearblue and yesterday I took one in the afternoon which showed low fertility so I seem to have skipped the flashing smiley altogether! 
Could my partners 'love juice' have affected the result as we BD'd right before I took the test?? 
This would also make this months cycle 22 days... last months was 25 and I got a positive opk with Tesco Cheapies on CD12. The month before was a 28 day cycle after a natural miscarriage. 
Does this sound right to you and has anyone else had a similar result?? Just seems so early and I can't understand why my cycles are getting shorter and shorter. Please help!!