Yes, in the first/second trimester I went from a small 34A to a 34D and I am busting out of the D already, I have a small frame so I totally understand how uncomfortable these new big breasts are :/
Unfortunately I have yet to find any bra more comfortable then a sports bra, so I bought a good one (I think it cost around 25 dollars) and I wear that most days.
I am not sure if they have a fredricks out where you are. But i am naturally top heavy I wear a 42F which is a 42DDD I believe. And i find their bra its a corset style bra thats really comfy. I am hoping I don't go up too high in bra size. I haven't gone up yet and I am 10 wks so I am pretty happy right now.