Minimal symptoms - what's happening ?

Cm

I know I shouldn't wish to have nausea and headaches, etc but at least it would tell me baby is okay.

All I have is sore boobs and some days, tired. Oh and I have ZERO stamina. My heart rate goes through the roof just going up the stairs which I know is horrible.

Other than that, I don't have anything that makes me FEEL pregnant. I know not everyone experiences symptoms but I'm 11w4d and I'm a little bit freaked out.

Anyone else going through the same?