Hi, anyone know what happens if you don't have a withdrawal bleed on this type of hrt. I have now been on it for nearly 5 weeks. It's day 6 of my second pack and I was expecting to have had some type of bleed by now but nothing not even spotting. How long can I leave it before going back to gp. Other than no sign of withdrawal bleed it has worked wonders, no more night sweats and sleeping better. Not pregnant. Thanks.