BBT advice / opinions

Ck
Would anyone mind taking a look at my chart - I've been charting a few months but started with Glow this month … 
​The others were just so complicated I deleted them after inputting my previous data into glow. 
​I don't have OPKs available to me …
​Could it be that I ovulated early or that's it's not yet happened … I have cramps that feel as though my period is coming early - it's not due until 10th feb.
​Advice / thoughts is very much appreciated 
​C x