Low lying placenta and blood flow

jv

I had have 3 placenta abruptions so the consultant wanted to scan my placenta today to check all is well in my case not so well I found out 1 I have a low lying placenta and also the blood is not flowing as it should be to the placenta I am so worried I am o my 19 weeks has anyone had any experience with this and can let me no the outcome? If I was not worried enough I’m now panicking 😩