I've been getting these pains in my chest.

我胸部一直有一些疼痛感。

《牛津词典》

youdao

I felt a tremendous pressure on my chest.

我感到胸口有股巨大的压力。

《柯林斯英汉双解大词典》

But my chest felt heavy, and my heart pounded in my body as if it were going to explode.

VOA: special.2010.08.01

He was telling me his name! I pointed to my chest and said my name,"John Carter."

VOA: special.2010.07.17

"The two batteries are feeding power to the controller and then to my chest,".

VOA: standard.2010.01.27

At about 3 o'clock in the morning I just had a horrible pain in my chest.

FORBES: Clayton Christensen: The Survivor

But my disappointment was like one of those knives, after sharpening, in my chest.

NEWYORKER: Wakefield

It felt like someone was standing on my chest, my breathing shallow and labored.

FORBES: What I Wish I Had When I Woke Up In The Middle Of The Night And Couldn't Breathe