Is it possible to have dominance issues, or im a just subconscious jealousy?

cuz my gf has a better job, shes a cook and im a bus boy, she has a driving license, shes gets paid way more. im 15, shes 16, the point is, i feel wierd/kinda pissed whenever i think about these things, and im just curious if its something about dominance[talking zoologically] or just jealousy. i also have been diagnosed with depression/OCD and might have PTSD, so im just wondering if that also plays a role in this problem