BJ as a laxative??

Hey ladies, am I the only one with this problem? Every time I swallow after giving my boyfriend a BJ it ends up having a laxative effect ranging from loose stool to full-blown diarrhea the next day... is this normal since we’re long-distance right now so I only can do it every once in a while? The first time it happened I thought it was a coincidence, but now it’s started happening almost every time. 😳 However, I noticed that when we were able to have oral several times in a shorter time span it seemed to not happen quite so bad.