Is this Anxiety/Panic that I am experiencing or something else?

I am a 34 year old male, I have weigh to lose but I am pretty active as I attend a gym 3-5 days a week and my job is pretty active in field sales.

For the past few days I have been experiencing what I feel is anxiety/panic like symptoms.

I have had a subtle feeling of like "nervous butterflys" in my chest and it comes and goes in waves. Mainly in the evening or if I am just sitting around doing nothing.

I have no pain what so ever when I am sedentary or even when I work out hard. It is just like a buzzing/adrenaline type feeling.

My dad passed last august and just found out my roommates dad died and my uncle died and I really feel for them but has not affected me directly - but not sure if this is causing anxiety type feelings?

Since I have no chest pain or any of that, is this more than likely Anxiety? I have tested my pulse rate and my BPM rate has been "normal"

Any help or advise would be appreciated I am trying to shake this feeling.