Hemorrhoids are not only common but very often meet after pregnancy. Some studies have proven almost 90% of Americans had at some point in their life hemorrhoids.
Some women get them for the first time while they're pregnant — and if you've had them before pregnancy, you're quite likely to have them again now.
Anyways, it seems that especially for pregnants, they tend to often go away on their own. For any type of hemorrhoids I have stumbled upon a cure called H Miracle.
http://natural-hemorrhoids-cure.blogspot.com/2009/06/h-miracle-cure.html