Getting discouraged

I'm so tired of feeling bad, mentally & physically. This pregnancy is draining me in every way. My fiancé is getting upset with me because I haven't been myself. I just want to feel good again. Im 11w3d & still can barely eat. I'm so over feeling this way I just wanna feel like myself & enjoy this pregnancy. Is anyone else feeling this way? I feel so alone & like no one understands.