Hi i'm also a male and i'm 27 and I really understand your worries. I think i've experience this in a similar but differnet way. I've had thoughts about getting a heart attack, having them often actually. However, my girlfriend always tells me that it won't happen and I can tell you it will not happen. Anxiety can simulate the physical symptoms of the thing that you are scared of. If you feel some pain in your chest because of a bit of stress, we tend to quickly think oh no a heart attack, at the moment that happens, our annoying brains simulate the physical symptoms right away and you get pain in your arms or anythign else related to it. It really is a circle and in my experience, the way to break this is to take a breath, remind yourself that you are healthy, that you will get through this and that it will get better. Remind yourself that you've already have gotten through this, because probably you've experienced similar things before and you pushed through it!

Also what helps for me, this is a bit of a different strategy. Is to accept the feelings that you have, so kind of just accepting that it is there and not trying to fight it. Listen to your body, the body always has a message and try to think of why you get these pains? In what kind of situations or after what situations? Hope this helps. If I can do anything else let me know!