I am on day 6 of down regging, injecting 0.5ml of Buserelin a day. At work an week I've wanted to sleep from about 3pm, and today have just been bone crushingly tired, all I've done is read and watch TV.... my usual weekend routine involves shopping, baking and a 10 mile run/heavy gym session but I have no motivation at all. Just forced myself to walk around the park so that I don't forget how to use my legs. I am also extremely thirsty and lacking appetite- I feel hungry but after a few bites I just don't want to eat anymore. I also have been quite grumpy/impatient but that is usual pre-menstrual
The tiredness sounds very familiar, my first two times on buserelin battered me! I'm not so bad this time, but I think that's because I'm not working at the moment. It should get better once you start the stimulation drugs, hang in there.