Temping differences, or did i not ovulate?

[Flutterby8]

Ladies,

I'm still quite new to tracking so please bear with me!
Last month I tracked my temp using a bog standard thermometer and have a lovely graph on 2 different apps.
I could see when I ovulated etc and all was well.

This month I've bought a BBT thermometer and have been using it every day (time varied slightly due to return to work).
None of my apps are showing me a coverline as yet and im 7DPO. I used OPK's and while I think I missed my peak, I still had a very high reading and this did tally up with a small temp spike.
The day after this spike my temp dropped again and wasnt far above where it was when I was supposodly fertile. Temp has been low for a few days and has risen a bit in the last 2 days.

Could this be the thermometer or do you think I didnt ovulate?
Side note, I feel exhausted, could just be going back to work after a long time but I could have slept all day yesterday!
Any ideas?? I attached this months chart.

Hmm I would say it looks like you possibly haven't ovulated yet. Do you have regular cycles? You may just ovulate late this cycle, so maybe keep doing OPKs to be on the safe side? X

Thanks for replying @MintGreenLife.
My cycles aren't that regular. They can range from 28 to 34/36 days. I had an almost positive OPK on the 14th which fit with the temp increase. Since then my CM is just creamy or non existant (sorry TMI).
I did an OPK yesterday and it was classed as high on the app but no other signs except small temp rise.

Surely it is too late to ovulate now? I'm on CD27?!
Im so confused!!

@Flutterby8 I ovulated on CD34 this cycle! But am recently off the pill so mine are all over the place. Did you get any EWCM around when you got your positive OPK? X

@MintGreenLife CD34 sounds like a really long cycle but if you've only recently stopped the pill things will hopefully settle soon. Fingers crossed for you!
I did have EWCM/watery CM between CD12 and CD16 which fits with the OPK and the temp spike hence I thought Ibhad ovulated, just my BBT is confusing me!