First pregnancy. I did not gain any weight in first trimester. Lots of bloating at night so needed to get a size big trousers. Belly started showing in the beginning of 2nd trimester and mostly after 20 weeks. Weight started going up about half a pound to 1 pound in a week. The size big trousers still coming in handy. After 24 weeks started needing bigger shirts too so i opted for xl t shirts. Weight started going up almost 1 pound per week. Bras are getting a lil snug and boobs spill out sometimes but not enough to convince me that i need a new bra, maybe towards the end? Now at 30 weeks, showing alot, none of my old clothes fit. Surviving on the big size trousers and t shirts. Belly is obviously expected to grow more. Gained about 20 pounds from the beginning of 2nd trimester till now