I am 27 weeks pregnant and have a low lying placenta. I wasn't told to avoid sex by my midwife due to the issue so we have carried on. However, the last few weeks (apologies if too much info now...) when he has entered me, it is so painful, it feels like (apologies again!) he has sandpaper wrapped around his penis, it feels really sore during and immediately after but then is fine the rest of the time. Could this be due to my low lying placenta or something else?