Is this a blister cause its very hard

Is it a blister ? Cause I’ve had had it for like a week now i have tired cutting it but the skin was kinda hard I’ve had blister before and i could cut them in one go… But not this one so im not sure what it is and i cant seem to post the pic

Is it a blister ? Cause I’ve had had it for like a week now i have tired cutting it but the skin was kinda hard I’ve had blister before and i could cut them in one go… But not this one so im not sure what it is and i cant seem to post the pic

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Is this a blister cause its very hard