I'm not quite sure if you're also asking for info that might help you in a future pregnancy or not, so please forgive me if what I have to offer is not a part of what you're asking for...
In terms of future pregnancies...For the past 80-100 years researchers have been finding ways in which elevated BP and pre-eclampsia can be prevented or treated through nutrition. This website can give you more information about that...
http://www.drbrewerpregnancydiet.com/id11.html
In terms of your question about future heart problems, I have a couple of different perspectives on that.
The first one is to say that what causes elevated BP in pregnancy is most often completely different from that which causes elevated BP in the non-pregnant body. Usually what causes an elevated BP in the pregnant body is an abnormally CONTRACTED blood volume from an inadequate amount of certain kinds of foods, while what often causes an elevated BP in the non-pregnant body is an abnormally EXPANDED blood volume (through heart disease, circulatory disease, kidney disease, and/or liver disease). Those who would put both kinds of BP elevation in the same box are making a mistake which can often lead to inappropriate and ineffective medical treatments.
The second perspective that I have for you on this part of the question is that having said that, it can definitely be a part of the picture that the process of Pre-Eclampsia can result in damage to the tissues of several internal organs, including the heart. So it seems very possible to me that for some people that heart damage could be permanent. But it also seems very possible to me that with the proper attention to nutrition and extra vitamin supplements for the post-partum or otherwise non-pregnant body, that damage could be healed to the point where it would not cause future problems.
http://www.drweil.com/drw/u/id/PAG00099
The third bit of info that I would like to pass on to you is that it is ok for the cholesterol levels of the pregnant body to be higher than is good for the non-pregnant body. The placenta is secreting about the equivalent of 100 birth control pills a day in hormones, and these hormones protect the mother from any potential ill-effects from any elevated cholesterol levels that she may incur from eating the foods that she needs for pregnancy, or that she may incur from the pregnancy processes themselves.
I hope that this helps.
Best wishes,
J.