Second trimester blues!

Jacqueline
So I started my second trimester a few days ago and was hoping the nausea would have subsided but it's worse. My lower back is constantly causing me pain and the headaches and dizzyness has only gotten worse. I know I'm getting bigger which is why I have the lower back pains but I am incredibly unhappy and sad a lot more then I was last trimester. Please tell me I'm not alone?!