Spotting... 3weejs 6 days

Jessica

I am only 3 weeks 6 days. Positive test on Friday night. Went to the bathroom and have white creamy CM in my knickers and when I wiped just a few spots of quite bright red blood. Few cramps and a little bit of lower back ache. When I went to check again it has gone very light pinky... do you think I should be worried? My period was due today so not sure if it's associated with that? Maybe my hormones haven't caught up!?