Is this my period doing this?

Okay so I've had my period for a couple of years now and this hasnt happened before. Me and my boyfriend have been together for a year and a bit and whenever I hear a sad song I start crying hysterically thinking my boyfriend is going to leave or something. I told him and he said he won't go anywhere and I... show more Okay so I've had my period for a couple of years now and this hasnt happened before. Me and my boyfriend have been together for a year and a bit and whenever I hear a sad song I start crying hysterically thinking my boyfriend is going to leave or something. I told him and he said he won't go anywhere and I should try and stop cuz its not healthy. I try to stop but I can't help it. Even when I'm doing homework the thought randomly comes and I cry Nd cry. This is the first time its happened and my period came yesterday so it all started from yesterday. Can someone please tell me what's up and how can I try to stop it. I'm 15 btw x thanks x
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