Oh The Joys of Clothes!

So its been about 11 months since my son was born. I had weighed a little more than I wanted before I got pregnant but not an outrageous amount and who doesn't right? Anyway, being pregnant and bigger than I have ever been in my life gave me a new appreciation for my pre-pregnancy body. I couldn't wait to wear pants with zippers again and tie my own shoes, which is sad I know.
It actually didn't take as long as I thought before I was losing weight and pretty much back to my old size. I had bought a couple pairs of pants right after and they were getting bigger and bigger. I was thrilled and took out my pre-pregnancy clothes happily. I even saw pictures of myself pre-pregnancy and thought how skinny I looked (which is not something I would have thought before). What no one told me was that my old clothes might not fit right either.
So now basically I have no clothes to wear. My new clothes are way too big but my old clothes are big in some places but too small in others. I have no idea what's going on. I can't just go down a size because that would be too small or at least really inappropriate for work. My stomach is still not completely flat (go figure) but everything else looks to be about the same as before. So what's going on? Why can I not find anything that fits? Why doesn't anyone tell you this before you have a baby? To top it all off, we're going on vacation to the Dominican in a few weeks and I have to put this new body into a bathingsuit...a word I wasn't really comfortable with before the baby. Everyone always says the typical comments..."you look great!" and "wow, you lost all the weight!". I appreciate the comments but I still feel uncomfortable. I have no idea what to wear, where to shop, or if the weight will keep shifting and I'll be going through this all again in a couple months (which one friend told me will definitely happen).
Before I got pregnant I was in the process of switching from juniors to womens clothing. It wasn't something I wanted to do or was comfortable with. I was used to juniors, knew what size I was and liked the clothes better than the "stuffy old lady clothes" I felt were in the women's section. Now I know I shouldn't be in the juniors department and it's no wonder those clothes no longer fit. But....I can't seem to find women's clothes that fit right either. Don't get my wrong....I love my son, I plan to have more babies and I'm thrilled to have lost the weight....I guess I'm just having trouble adjusting to the new body.