Ditto re Warwick's wise words, I didn't have any side effects when I first started on Tibolone but also didn't notice any improvement until day 14.
I take mine in the morning about 7.30 and by the time I've parked up and walking into the office, I'm energised and ready for the day.
Please don't give up, it does help but our hormones need time to adjust and settle down.