Help help help please! 🙂

I'm currently ttc baby 1!
I came off my pill 21st December 
Had withdrawal bleed 24th
Had first 'period' 26th January 
So glow says I should of ovulated 8th-15th February (ovulation occurring 14th or 15th)
I had high open cervix and ewcm on 8th and 9th Feb and then my cervix dropped after that and cm has been sticky.
I'm wondering if I could possibly of ovulated then? And still have my period on 27th
Or does it look like I'm gonna have a shorter cycle?
I'm unsure about how long my cycles are gonna be because it was 31 days between withdrawal bleed and period, rather than between a period and a period, if you get what I mean? 🙃
I'm hoping someone can share experiences or help???????
I have taken pregnancy tests with FMU and they have been negative, not sure whether I am just being paranoid.
Is it possible I haven't even ovulated and still got a period?????????!!!