Help please

[Calluna]

First off, I think I've been ovulating really early - around 4 or 5 days after my period ends. (CD4?)
Because I've been having loads of EWCM around then, then nothing for the rest of the month except the odd period pain like cramp. (Having said that I know next to nothing about knowing when I ovulate so that could be totally wrong.)

We DTD on (if I have my abbreviations right lol) CD4, and a few times after that over the course of the month. With condoms but I think we may have had a slight leak on CD4.

I'm notorious for imagining symptoms, so this may all be I'm my head, but I've not really thought too much about it so I'm a bit concerned now.

Mid month I had period pain like cramping, 2 days ago I had metallic taste in my mouth. Nothing yesterday, this morning I woke with a bit of nausea and note the metallic taste is back.

I've gained a bit of podge around my belly, but I gorged myself on Christmas day, so that could just be a food baby. Lol

Eta- Helps if I include the question.
What do you think, am I imagining this or not? I'm not sure when AF is due exactly but it can't be far off. Guess I'll have to just wait and seeI guess.

Hopefully that makes sense, I'm on my phone and can't really proof read it.