Low Lying Placenta

Hi ladies,

So I just found out at my last scan (about 2 weeks ago) the tech noticed my placenta is quite low. Since then the bottom of my belly has been feeling quite tight and at some points even felt like it was going to tear apart.. These feelings mostly occur whilst I'm walking (doesn't matter how long I've been walking)

Any ideas on what I should be doing? I haven't mentioned it to the doctors because I have the worst effing memory ever..

Should I be worried?