Transverse and placenta previa

I’m currently 21 weeks. Had my anatomy scan today. I’m having monthly ultrasounds due to some medical conditions. At the 16 week and this ultrasound baby was in transverse (sideways/horizontal) position. They also discovered that I have placenta previa at 1.7 cm(?). I also had brown spotting for a week and was also losing chunks of mucus plug for over a week. So now I’m on bed rest for the time being. Has anyone else had both conditions and gone on to have a full term baby with a vaginal birth? Dr is telling me that I might need a csection by 36 weeks at the latest.