What does it mean when you have a small leak in your placenta?

I went to my 20 week ultrasound and my doctor told me everything looks healthy they did see a small leak in my placenta that they want to recheck at 32 weeks. My doctor said it’s nothing to worry about but I’m afraid they’re just saying that so I don’t stress. Has anyone else had this happen?

I just had my baby on the 8th and my placenta was 10% ruptured and I woke up to nothing but blood and a lot of it so I went to the hospital and I bleed the whole time he recommended me to get an epidural but I was scared and cried hysterically so we decided to monitor my bleeding and if it got worse I would have no choice so towards the end it did and I had it done my baby was not wanting to come out we tried moving me in all positions but I’m glad I had the epidural because they could not have done what they needed to do if I didn’t. During my pregnancy I was bleeding off and on and he gave me medicine to stop the bleeding but he didn’t see anything with my placenta during my pregnancy but I guess it just happened idk I’m not sure if my story helped but I figured I would let you know. This was my 6th baby they only one that needed an epidural and the only one this happened with

Is it a bleed like a slight placenta abruption? I would say if you feel any slight pain I don’t even care if it’s actually lower back sciatica, go in to l&d immediately. My placenta abruptions were super fast. I lost 2 babies due to placenta abruption and could have lost my life. I don’t want to freak you out bc yours is small. Mine was bad… really bad.