I am so glad to hear that you are concerned and are looking for info and possible help with this. I read an abstract on an article from the National Institute of Health (I will copy and paste the abstract) that states that women who suffer from pre partum psychosis have a higher risk of developing post partum psychosis.
Prepartum psychosis. [J Affect Disord. 1990] - PubMed Result
Four patients are described who suffered from postpartum psychosis, and also from similar episodes starting in late pregnancy. It is argued that these patients provide evidence for the prepartum onset of postpartum psychosis in a small minority of patients. The relevance of this to the aetiology of puerperal psychosis is discussed.
Here is another link that describes the relationship of pre partum psychosis with post partum psychosis. I could not copy and paste this article, I can only post the link.
SpringerLink - Journal Article
Again, I am happy to see that you are concerned about the health and welfare of you, your baby and your family. You absolutely should bring this up with your doctor as soon as possible.