late!!

hey ladies, I had sex just over two weeks ago with my partner. we have been actively trying for 3 month. my periods are normally regular or maybe a day early. I'm currently 3 days late. but no signs of feeling pregnant. also when I wiped yesterday it was light pink. that was for a few hour now it back to normal. I checked my cm this morning and it's brownish but no more colouring when I wipe... please advise