Mood crashes during first trimester?

Any mummies experienced their mood crashing in the first trimester? It’s really challenging getting through this phase because appetite is almost 0, and I feel myself being tired everyday and ultra sensitive to everyone including long time friends. To the point that I’ve to withdraw from everyone because I don’t want to blow up, and they may not understand what I’m going through, and also honestly I don’t have the physical energy to go out to meet them or host them at my home. First time mum here, and feeling so alone. #firsttimemum