Mine does too, like it’s breaking out of my chest! I had no idea so many others experience this too.
Whenever I have those little temptations to doubt, all I need to do is approach the Blessed Sacrament. It’s very touching, it’s as if my primal instinct knows that its Maker is right before it, even if my mind is off somewhere else. There’s so many stories I’ve come upon recently about how animals act around the Blessed Sacrament. Weird stuff, like one time when a church was being raided a priest grabbed the Blessed Sacrament from the Tabernacle, ran away and buried Him in a field. I think the priest ended up being killed or something… but then one day a farmer was plowing the land and his oxen sort of bowed and stopped. He was shocked, and the ground began emitting light. This Eucharistic miracle happened in Poland I think.
Also when Pope John Paul the Great was about to go to a church in New York (idk which one), police dogs searched it, and the dogs stopped cold in front of the Tabernacle and just sat happily.
Has anybody else felt the same way just approaching the Tabernacle to pray? I’ve been going a lot recently and it’s the nicest thing to spend some time with God absolutely alone (unlike adoration).