Ugh nausea!

Have tried everything I can to help the nausea including eating before I get up but nothing's helping. Does anyone know if UK GP's will prescribe anti emetics if I'm not being sick yet? It's really affecting me at work and with my other kids as well as making me feel really down (I have a history of depression). I really don't think I can take feeling like this much longer but I've still got around 6 weeks until it should settle. It's making me really resent being pregnant even though it's what we wanted and we were trying for this baby.