Congrats!
I think pimple cream with benzoyl peroxide (like off the shelf oxy, clearasil, t3) is ok, but NOT those with vitamin A tretinoin.
Depending on your skin condition, budget and preference, plenty of choices out there vyong for the shopper's dollar, but I remember Oxy sold this reasonably priced set with cleanser, toner and blemish cream moisturizer for less than ten bucks. Do shop around, but perhaps it'd help quite a bit to keep skin clean (oil, bacteria free and well exfoliated so less trapped sebum) and hydrated (doesnt mean oily!). Quite likely, the pimples are a passing phase.
If you have some dough to burn, see a good dermatologist. That should lighten your load, especially your wallet's load
For the freckles, there's no point in going to an asthetic surgeon now, as we all know what pregnancy(s) can do. Wait till you're done with all your babies. You can use what you can to make yourself feel better (home skin peel, aha, feckle cream, etc), but know that the experts advised that many of these products don't really work. When I grew a few new freckles with pregnancy, my husband would comfort me that after we're done with the babies, he will pay for my skinwork (note not unlimited plastic surgery n all...). Probably to make me feel better, he did speak to a few friends. If it ever materialises after my babies season and my freckles get blasted away well, will reco.
Cut hair? Er... Why not? I think many mommies here will think it's good idea. A good haircut often makes is look and feel better.
I also like to keep my scalp clean with clarifying shampoos like Neutrogena residue removing. I find that if my scalp is oily, I tend to lose hair.
Colouring hair.. I dunno, I dun colour my hair, let me ask someone who'd know...