When you were/are pregnant, when did you start wearing maternity clothes?

I am 7w2d and I am sooo bloated. My work slacks still fit but my jeans are snug!! And I feel so fat in my tops I wanna cover up but I live in Vegas and it is starting to get warm finally! I am in that bloated stage. It will be better once I get my round belly but what do I do in the meantime?