I wouldn't think so. Sounds like it just had some residual fermentables at bottling time and that's what most likely caused the slight carbonation of your wine. The only other thing I think that would cause it would be an infection but being as its been bottled for 3 months I'd expect if it was an infection it would be a lot more apparent and you'd have some sort of growth in the bottle and most likely would have either tasted of vinegar or very sour or would have either exploded the bottle or popped the cork or foamed heavily upon opening.