No. It simply means that a doctor has identified two coronary arteries that are narrowed and/or blocked. While such a discovery might come after a heart attack, it's also possible for a check-up to identify such a problem without the patient having had a heart attack at all.
you know the garden hose that has the criss crossy thing in the wall?
the clever doctors do that ( smaller mind!) to the arteries IN the heart and it keep them open
if you NEED two stents - then Chris' answer applies
Done under local usually and yes it has been done hundreds of thousands of times before
If the stents have been inserted at different times then yes it may well indicate two heart attacks.
There are other indications for stent insertions that are not due to heart attacks, so without further details it is impossible to give a complete answer.