Yes I've been struggling with exhaustion and no energy too. I'm 13 weeks now and hoping it will ease up sometime soon.
My lg has finished nursery for summer and I had so much planned and so many places I wanted to take her, but just don't have the energy to do anything much.
I go to bed as soon as we've got our lo down for the night. I also try and get most things done in a morning, when I have more energy, because come lunch time I'm just wiped out. I barely do any housework at the moment! Now we don't have to get up to go to nursery I have a lay in in the mornings too. I don't get to nap during the day, but use the tv/tablet to entertain lo for a bit so I can have a sit down and a rest.