Hi my girlfriend was diagnosed with an innocent heart murmur as a child and every so often she will experience almost like an attack with her murmur. most of the time it goes away within a minute or two, but this evening for the past two hours it has been really bothering her. she has a headache, light-headed, fatiqued and she feels like her heart is pounding hard, but not fast. she is 21 years old. any suggestions?