Pinkish discharge

Emily • 24. Expecting my first :) been with the father for 5 years now and we are very happy.
I'm about 5 weeks pregnant, I've been having very mild cramping for about a week now. Earlier when I went pee and wiped there was pinkish discharge on the tissue, like there was a little blood mixed in. Is this something to be worried about? This is my first pregnancy.