Separation anxiety

Am I the only one who gets really bad anxiety when separated from their child? My son rarely leaves me & when he does it’s like knocking wind out of my chest. But my son is always so unbothered or content so that’s a little reassuring. But I’ve bit the bullet & finally accepted that’s ITS ME ! And I honestly don’t know how too handle this...my head feels like it’s being squeezed an my chest stays tight the entire time. What do I do