PMS or pregnancy symptoms?

Im very confused about what's going on in my body right now! Ive been on progesterone for the last 10 days,and have had no symptoms - no sore breasts, no tiredness, nothing. For the last few cycles,after O, ive had very sore breasts, and felt a bit more moody than normal. I know these are from the progesterone released after O. So, why in the month im actually taking more progesterone than normal, am i only getting these symptoms (and im feeling nauseaous, esp. at night) at 10DPO?

Is it too early to take a pregnancy test? Should i stop the progesterone, or keep taking it in case im pregnant?

My main symptoms now are nausea, extremely sore and swollen breasts, tiredness, and slight headaches. Do these sound progesterone or pregnancy related??

Thanks in advance.