I'm told that hormones will do that! Uggh! Be sure to look up if it's okay first, but lavender essential oil does wonders for acne. So does Colloidal Silver . I put the lavender on my Acne and is goes away much quicker!! I do the same with the Colloidal Silver . But look up it's safty first! After pregnancy look into hyssop tincture, or tea. You want the hyssopus officalous species specifically. I remember it as "offical hyssop"! hehehe!
You take a cup of hyssop tea no more then 3 times a day. Or 10 to 30 drops of tincture no more then 3 times a day. I am doing 10 drops twice a day and my Acne on my back is vanishing!! It's neat! But hyssop is definately a no go for pregnancy or breastfreeding.

God bless!