You can still get pregnant with IIH and there are some sufferers who haven't had any problems during their pregnancy. I thought you might find this reassuring and helpful from the IH Research Foundation.
IH and PregnancyI went through my whole pregnancy with IIH because that triggered it for me, but I wasn't diagnosed with it officially until afterwards. I had a normal pregnancy although I did have the headaches, and wasn't on any medication. I have to say though this was 23 years ago. I'm sure we have members who have experience with IIH and pregnancy much sooner than that, and will be able to give you more assurance.
Don't give up on the idea of having a family. I think that this information will also help to reassure you.
Management of the pregnant IIH patient Hope this helps.
Heidi