Maybe pregnant?

Tesia • Finally conceived our first baby after over a year of trying!
My gyno put me on progesterone pills for 10 days an told me if I don't have my period then I could be pregnant. So far I have been only spotting brown fluid. Yesterday very very light and then today there's more but not much. Not like a normal period at all. Also my nipples have been sore and my stomach has felt tight/bloated. Help?