Symptoms or just hopeful?

Hey,

I tried to conceive again a week or so ago now and last night felt really sickly? I also felt different like 3 days ago but don’t know how to explain it. I don’t want to get my hopes up as I could just be run down, but could I be pregnant?

My period was due the Monday on the week before I TTC, and I’m usually on for 5 days but I missed my period too.

When would be a good time to test? As my period would have been extremely recent so is testing earlier than my next missed period okay? How long should I leave it?

Any help/advice would be appreciated!