My husband experienced exactly the same, we were worrying for weeks, visited ER and the cardiologist 2 times, who got already inpatient with us.
He described it like the same kind of pressure, he experienced before getting the stunt.
Everything looked fine though.
Finally our family doctor explained us, that it can be totally normal, this “ stent stretch”.
What a relief after all these weeks of being worried.
And he was right, after about 2 months the pressure disappeared.
2 years after, he still feels wonderful.