Is it common to have nausea in the second trimester also?

Yupp it's still possible. My best friend who has a history of being anaemic had nausea all throughout her second trimester and she suspected that it had something to do with that. But it wasn't as delibitating as the first trimester. She just felt like there was something stuck at the back of her throat. Warm water with a squeeze of lemon kept her nausea at bay.