Anxiety for heart attack. Hence worried.

I'm having anxiety related heartattack & have seen few heartattack news of people dying at a very young age recently, and I am overthinking about every chestpain I have. I'm writing to confirm If I'm okay or if i need to get heart checked.I sometimes feel slight pain in the musle of my chest on top right side more towards neck. But it never stays for too long.I get bloated and acidity so it could be the reason,also my chest(mostly breast muscles)have been hurting for a week before I got my period.And i had left shoulder pain and left arm pain earlier but I have also had bad posture and I write a lot(I'm a student), and constantly being on my laptop and all has caused strain to my left shoulder.But my anxiety makes me think these are all symptoms of impending heart attack.2 days back i felt i was getting lightheaded maybe because of anxiety,but i had no chest pain nothing but i got scared.Please suggest if i should get my heart checked or not. I'm kinda overweight as well,hence worried.