Period or pregnancy?

Hi all!

Ok so this is my first month TTC and am due on my period in 10 days... I have slightly sore nipples, on and off nausea, constant burping, especially after or during food and occasionally have a little reflux. My tummy is bloated and I get period pains. On top of this I have this copper like taste in my mouth and feel quite tired. Could these be post ovulation or early period symptoms? Surely you can’t experience “pregnancy symptoms” so early on?? TIA xx