BBT spike 5DPO

Anna | Expecting 1st baby 23.01.2019

Hey!

Can anyone make sense of my chart? I’m a bit lost... particularly Natural Cycles users who understand these charts!

I had a positive OPK on the 28th the app told me I ovulated on the 29th and BD’d that day. Could this be implantation or is it too soon?

Am I actually only just ovulating now?!

Very confused!!