This is my fourth but I can't remember what it was like 
I'm 26 weeks but I feel just utterly whacked. I'm not even doing anything , my dc went to their dads and have been there over a week so im just pottering around. I only have about 20 mins of housework a day but it just seems so much - I just did the washing up then needed a rest before doing 1/2 the hoovering. I just feel like sleeping but at night I struggle to sleep. This morning I woke at 4 and decided to go out , then slept maybe 8.30am -12 but I just can't move. I don't even feel like watching a movie , it's like even my brain had given up. I bought a lot of biscuits and some Galaxy bars and I have barely touched them in days , and in the past I could eat a packet in one sitting.
Is this normal? I am thinking maybe I'm lacking something as I'm a vegetarian but I eat quite well I think with pulses and vegetable based curries etc, also I take 2 spatone a day since the beginning.
What's wrong with me?