17 weeks and spotting

I had subchorionic bleeding on my 12th week. I'm on bed rest and Pampa kapit meds and is monitored by my OB naman. I also had contractions shown on my ultrasound before pero nawala na. Third, mababa rin ang placenta ko. I recently turned 17 weeks and had a spotting. I already talked to my OB and is scheduled for an ultrasound asap. My question is, does anyone experienced this kind of pregnancy? Nag aalala rin ako kasi kahit sumusunod naman ako sa doctor I'm still scared because it's my first baby. By the way, I'm 32 years old with PCOS. #1stimemom Baka may mga other tips kayo mommy especially those who had experience the same as I am.