Do your boobs grow after having sex?

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Hi this question is probably so dumb but I lost my virginity around a month ago and ever since then I’ve been having sex pretty regularly. I’ve noticed my boobs have gotten significantly bigger. I’ve heard conflicting information about whether having sex for the first time causes changes to your body so I’m not sure if that’s what’s caused it. I haven’t gained weight or anything so I’m not sure what else it would be caused by