Firm cervix to soft luteal phase

Hi all,

I’m hoping someone can offer me some advice. TTC we are currently on our 4th cycle. Did opk tests so I know i am 6 dpo today, has anyone mastered checking their cervix during their cycles? I have been tracking every day this cycle and noticed after I ovulated (day 18) that it was low firm and closed. Checked today 6dpo and noticed it’s higher and a lot softer and closed. Could this be a ver early indication of pregnancy? Not testing till 13-14dpo.