Miscarriage threat

I have taken 4 pregnancy test and they have all been positive. My period is supposed to start tomorrow. This morning i woke up took a test and it was positive but when I got done wiping there was a little blood on the toilet paper. I had a miscarriage about a year ago and I’m praying and praying this one does not turn out like that. Is the bleeding on the toilet paper a sign of miscarriage? Could be implantation bleeding is that even a thing? I have a 2 year old daughter and didn’t have implantation bleeding with her pregnancy. Please help! Praying to God this one was sticky enough and is healthy. I have prayed and prayed for this baby 🙏😔🙏