I am SO tired! Almost 12 weeks

Mrs. R
When will I get a little energy back?! They say 12 weeks but I'm a few days away and literally want to lay in bed all day. I stand a lot at my job so any chance I can sit down I do. I've been like this since 5 weeks. I am slacking on housework and at work too. I have zero energy! I just want a tiny bit of it back!:)