Hi I'm 17 Weeks Pregnant And I'm Really Worried About

Hi

I'm 17 weeks pregnant and I'm really worried about the symptoms I have..
Not sure if this is normal.. I feel weak not sleepy but really weak I cant do anything around the house and if I do I will feel very shaky. Sometimes I just feel I cant even lift up my arms and feel so miserable. I feel like I cant enjoy my pregnancy since I cant do anything or even go out. Please help me