Cycle 18 - Ovulation problems!

[Lost7]

August 2014: Non ovulation due to Full Time Breastfeeding and only being 2 months PostPartum.
Since then I have ovulated as per the following.

September 2014 - Ovulated but didn't start FF.
October 2014 - CD15 Ovulation
November 2014 - CD18 Ovulation
December 2014 - CD15 Ovulation
January 2015 - CD 16 Ovulation
February 2015 - MC
March 2015 - MC
March 2015 - CD24 (1st Cycle after MC & had Mid cycle bleed CD17)
April 2015 - CD18 Ovulation
May 2015 - CD18 Ovulation
June 2015 - CD17 Ovulation
July 2015 - CD16 Ovulation
August 2015 - CD16 Ovulation
September 2015 - CD16 Ovulation
October 2015 - CD16 Ovulation
November 2015 - CD16 Ovulation
December 2015 - ???​

I am now on CD18 and have been getting 'High' since CD14 with no peak.
It's not often I ask for help and advice but I am wondering what's going on this cycle.
One month I continued to test after my 'PEAK' and it soon went back to 'Low' which leads me to believe - I am yet to ovulate.

Symptoms:

Stomach ache for days (as if I am trying to ovulate)
Tender boobs (NEVER have tender boobs)
Occasional Sickness & Heartburn
CD12 - Had a small EWCM / Clear CM (Never usually have ANY)​

Whilst the Clearblue Advanced Fertility Monitor keeps reading 'High' my OPK's remain a very strict NEGATIVE. On CD10 though, I did test and for ''only CD10'' they were almost positive - which makes me believe, maybe I Ovulated before I started using the CBAFM (CD14).

Christmas doesn't exactly feel stressful this year.

**PLEASE NOTE, THE CD12 IMAGE IS HIDDEN BY A SPOILER AS IT IS A PHOTO OF CERVICAL MUCUS AND I APPRECIATE THAT NOT EVERYONE WANTS TO SEE THIS**

CD10:
https://i.imgur.com/7s0p2w6.jpg

CD12: (CM photo)

Spoiler

https://i.imgur.com/S9JMSmC.jpg

CD16: (Usual O day)
https://i.imgur.com/ctX1y0G.jpg

CD18 (Today)
https://i.imgur.com/TaYrbBB.jpg​