You poor thing!

I think most of us can probably relate to the unpredictable skin that comes with pg. To battle my skin woes I try and use natural, soothing skin care products which don't have a high acidic level or have any perfumes in them, although I am definitely still prone to the odd break-out. Try cleansing and moisturising in both the morning and at night, to keep your skin clean and nourished.
Try rubbing ice on blind pimples, as this can sometimes take the 'redness' out of them. It sounds quite strange, but I have a friend who swears by it.

Apart from that, I just tried to focus on the little miracle that was forming inside me, and tried not to think about the toll that it was taking on my complexion. (easier said than done. . ):P