I was actually getting breathless from quite early on too. I'm not sure exactly how early though, but it kind of bothered me a bit too. Sometimes I kind of have to stop in the middle of talking to take a breath (no jokes please LOL!!). And sometimes I just feel like I'm simply not getting enough air if that makes sense???

Mention it to your OB/GP as always if you're worried, but to answer your question, yes, I did start get it earlier than what I would have reasonably expected!