kotel613 is right. Bloat is treated in the UK (i don’t know about the US) with medication, and therefore there is no problem. It is a problem with imported meat from Argentina for example, where a farmer just lightly punctures the stomach wall to let out the air. This renders the animal treif and is almost undetectable. For this reason, many kashrus organisations have cutback on their imported, and cheaper, meat.
As to the OP, it may be your imagination?