Just need some answers!! Help please!

Jessica

I am 6weeks and 5 days today. This will be my first child and I am so excited. But is it normal to feel a little unhappy sometimes? I don't know if it's because of my lack of motivation or energy but I just don't feel as my happy normal self. Has anyone else experienced this? Also, is it too soon for pants to be fitting tight already!!?? And I have been pretty healthy and drinking lots of water!