I had Progesterone but not in a needle. (thank god because i dont deal well with needles.... big needle wimp here) My FS put me on Progesterone Pessaries (200mg) straight after transfer. From memory I was on them for 4 weeks. I would use one in the evening when going to bed, and when I woke I would use another and then stay in bed or go back to sleep. The only down side i had was that my body seemed to be aware that I had to wake up to use the morning one, so it woke me continually during the night, only to roll over look at the time and go back to sleep again.