Worried

My boyfriend and I are trying to conceive, I've had to children already. This will be his first. He's had a rough past with having testicular cancer and had to have a testical removed. He was taking testostorone shots once a week. We went to the doctor to find out if he was fertile or not. His dr told him that he was not going to be while being on the shots. So he put him on clomid for 3 months. Takes a pill every other day to help or make him fertile. He wants nothing more than to have a child of his own! Has anyone else had a partner on clomid before?!