Lost weight

So far I am 9w4 and I have lost just over 8lb. I have not tried to lose any weight but my appetite has been so rubbish. After a few mouthfuls of my meal I have no desire to eat it and if I push myself to eat it then I feel really nauseous. I have a few 'extra pounds' anyway but has anyone else had this? It really getting disheartening that I am only managing small portions of my meals and am constantly throwing food away.