6 weeks and exhausted

I am beyond excited to have this life growing inside me.... Like BEYOND excited. It will take some getting used to having to slow down and take it easy sometimes. I used to exercise often and very hard. I am an avid weight lifter but I have had to scale back and take more breaks while working out. And I can't workout every day because some days I'm just too tired or too hungry. Lol. Not to mention, my healthy diet has been taken control of by this little peanut. Lol. I just feel a huge lack of motivation just to do every day tasks. Im really hoping after the first trimester, I will start feeling better. I don't want to complain because I'm so very happy to be pregnant.... Its just not always easy.