Pregnancy

So on the 16th and 17th started bleeding but only when I wiped and a little tissue. Was supposed to start my period on the 20th I think. Today and yesterday I’ve only been bleeding when I wipe not all day long just a few times with a little tissue yesterday it was pink stringy mucus. Haven’t had cramps just diarrhea the past few days and a fullness feeling in my stomach and heat flashes but that’s about it. Should I be worried about the tissue? This is my second pregnancy but I didn’t bleed until I was like 9-12 weeks because I had a subchorionic hemorrhage that eventually went away I also just took this test today.