Tmi help need some answers

Stephanie • im 26 and have 2 amazing kids with my ex. i just found out im pregnant with my rainbow baby by my boyfriend of 3 years due December 30

Im so confused. My period ended on Saturday, all day sunday nothing then on Monday it was there again for half the day. Then nothing.

Today while wipeing it was a brownish/pinikish color? Sooo confused my body never did this before