Thanks so much for your replies girls.

Well I decided to take the night tablets after feeding Angus at 9pm and he fed again at 5am this morning. I am not going to take anymore now, I just really needed a good rest as I am on call for a birth and hadn't slept the night before.

I am feeling alot more rested, so won't take anymore now as I don't want to effect my milk supply so hopefully the one off won't be too bad.