Spotting at almost 7 weeks?? HELP!

I just went the the bathroom and when I wiped this is what was there but nothing came out in the toilet and it doesn’t feel like I need a panty liner or anything. Is this normal for 6 weeks and 5 days?? I did have implantation bleeding a few days after my missed period and I continued to take tests that were positive. I go to my first doctors appointment on Thursday. Please help! This is my first pregnancy and I get nervous when I read thing online...