Mamsh, if you're having trouble breathing and your heart is beating fast right now, please go to the emergency room or call your doctor immediately, hindi yan dapat i-ignore! These symptoms need proper medical check-up agad. Alam ko nakakascary yan, but doctors need to see you in person para malaman kung ano talaga ang nangyayari. Sana mabilis kang makakuha ng help, bes. Keep us updated, okay?