Please help I'm 15 weeks n 6 days

I just woke up from sleeping n when I wiped there was some blood on the tissue, I don't have any pain or cramps or anything, I'm so worried right now, I googled it and found a forum from women saying that they have been through this but that the baby was fine
I have a appt on Monday with my midwife this is my 3rd baby, what should I do? Has this happened to u