I;m 28 weeks pregnant with a placenta previa. I bled once and was sent home. Can I make it to term?

Maybe. Placenta previa's tend to migrate up into the large (fundus) part of the uterus when it is marginally attached near the cervical opening and the pregnancy goes to term. A ultrasound can confirm its' location. If you have any vaginal bleeding whatsoever, go directly to the hospital if it is bright red and call your OB immediately.