Unstable angina and getting back to normal

[Challenger2009]

Morning and thanks for the reply to my last post, so after being released from hospital last Monday the first few days were fine but since last Friday it has been a bit up and down, I have a pretty much blocked left arterie but have a collateral vessel growing around it and the other two are starting to block up aswell and have unstable angina, I have been given a few different tablets to take to try and control it aswell as life style changes, but I still get alot of angina issues and get tired very easily when doing things, I am only 43 and want to get back to doing my job properly it can be pretty physical, my question is how long did other people find the medication took to make a difference and get back to some sort of normality.