I also experienced crazy mood swings my first few months on T. My doc switched me to a lower dose, increased shots to weekly instead of every other week, and bumped up my anxiety/depression meds. Its worth noting that I struggled with depression/anxiety before T, and those always increased during my time of the month before T. But once I started T, it was even worse than my monthly mood, constantly. Hope that makes sense. So the mood swings are definitely possible, but like the other guys said, you might not experience anything at all. It's not really something you can plan for, you just have to treat the symptoms as they come up. FWIW, since we got my dose sorted out, I've never been happier and stable!