Placenta previa !?

Hello mommas so I’m 21 w with my second , she is breech and told I have placenta previa I have stopped sex and carrying heavy things except my toddler . So I’ve been experiencing lots of pain I am not so big yet but I feel like I felt when my son was close to being born a lot of discomfort luckily no bleeding though. Is this normal ? I have a second ultrasound next week but I am nervous .