Wait, fifth month? Is that right? I was thinking that, at 17 weeks, I'm more like four and a half months. But I'm still slightly confused by the whole "timing from LMP" thing, so I could be wrong. It's much more fun to say five months pregnant than four and a half!
Um, Annais, not only have I started to buy maternity clothes, but that's all I'm wearing. Now I DO feel huge! Some of the maternity shirts I have are still a little big (i.e., just look voluminous) but I can only really wear maternity pants right now. I think I lost the ability to wear regular pants and breathe at the same time at around 12 weeks. I wore bigger pants for a while, but now it's easier -- and more comfortable -- to wear maternity pants.
Besides the clothes I've borrowed, I've gotten everything from Target. They do have really cute things, and they're not too expensive at all. I got a pair of dark boot-cut jeans, black pants, a black cardigan, and a cute vertically-striped button-down shirt. I don't think any of those things was over $20. I've also gotten some things at Old Navy -- they have a sale online, and I got a sweater, some t-shirts, a bathing suit, workout shorts, and a v-neck blousy thing.