scared and worried

hi, I'm new to this. so I've been bleeding for nearly 3 weeks now, its not soaking pads but its there when I wipe, sometimes red mostly brown blood. I rang my doctor on Thursday, she gave me some tablets to slow it down, I've taken them and its still the same. she told me to ring back up once its slowed down for swabs and an examination. which is what I'm going to do tomorrow, make an appointment. I'm so scared and worried. in the past I've had problems too, with pain, I got scanned and I had cysts and fibroids. I also bleed after intercourse. but this is the longest I've bled. I'm on cerelle mini pill. I'm so worried I'm going to leave my babies behind, I'm thinking of the worst and can't control the worry and sickness I'm feeling. my youngest baby is only 2 sorry for the long post. I just need someone to talk to.