Placenta previa concerns of further complication

Patient: I’m 19wks pregnant and was diagnosed with Placenta Previa. A month or so ago, I just had another ultrasound done this past Friday and was told that my placenta is 3 cm above my cervix and was already having contractions. my doctor was supposed to call me yesterday if not today and she didn’t, so I called her office to inquire about my results and found out my doctor is out of town and only she can give me my results. Is it okay for my placenta to be so low, if not what can I do?