I know its been months since you posted this but thought I'd reply anyway
I was diagnosed with ITP after a blood test to see if we were pregnant since we were trying.. It was caught at a count of 23k, and I was put on 100mg of prednisolone which was dropped to 50mg as I responded nice and quick. Since we were trying, I was assured that this was a category A drug which means was safe to conceive and be pregnant on (and breastfeed on). Just as well, we fell pregnant about two weeks later!
Throughout the pregnancy with my son we were monitoring my plts and trying to wean off of the pred, but if the pred went down, so did my plt count. My haema really wanted to get the pred down to as low a dose as possible, so I had a couple of rounds of IVIg, one at 16w, another about 29w (i think there was another in there too).. Unfortunately at 18w I developed a DVT in my leg, so that sapped my plts and caused complications for haema to ensure the fine line between keeping the clot from progressing while maintaining healthy plt counts wasn't crossed..
The only other complication with the pregnancy is that I developed insulin resistance from the prednisolone, so had gestational diabetes in the last trimester.
Crazily I'm pregnant again, same issues but started at a lower plt count as the pregnancy caught us by surprise; we were trying to combat the low plts before going on clot preventative injections, unluckily I got a very substantial DVT from groin to top of belly and behind my knee. This time we expect to have IVIg monthly to keep on top as the plts dont seem to be responding to the pred.
My son had a low plt count when he was born, was kept in neonatal for 6days until it stabilised (by itself), he has no signs of low plts now (is 9m), paediatrician is happy with how he is so no need for follow ups for him.
Complications can arise in any pregnancy, you will feel like a pin cushion but it is strangely reassuring to know what your count is, and your haema and obs docs should all work together to keep an eye on you and your baby.