Hi Lisa and welcome ,
Liz gave you the link I was going to give - LOL.

anyway -do some more reading on the TOS forum and check the stickys on both of these forums.
Many Tos'sers get a nerve irritated or muscle spasms that affects our breathing and sometimes will even feel like a heart attack.

we have anatomy links in our stickys too {TOS forum} so you can find where your problem area is and link it in a post if you want.

Hope to see you there
JO