To answer your question regarding return to work ,etc. is patient specific and requires consultation with a cardiologist who has your medical history, current condition, etc.
My experience with a heart disorder going on 6 years now is almost identical to your present situation. I had hypokinesis from a prior heart event and CHF; the RCA 98% was stented, circumflex 72% (not stented), and the LAD is/was 100% blocked.
You should have received written instructions for any limitations upon discharge from the hospital. I was in the hospital several days after the stent implant due to pulmonary edema (congested heart failure) and there was no problem cath entery site, etc. Sometimes a problem so there is general advice not to do any heavy lifting for serveral days. There were no limitations imposed and I returned to a gym workout and resumed normal activities.