Stents cannot be used in L shaped arteries.
Did they give you the percentages of the blockages?
They will not do anything until a blockage is at least 70 ~ 75%
I had 2 blockages in the Left Main Coronary Artery of 90% and one int the Right Main Coronary Artery of 70%
In my case I had a triple bypass, that was in 2009 - I have no angina now and feel great.
If you are given the option between stents and bypass - choose the bypass the prognosis is much better.