uh guys.. i am siriously questioning myself and need help with yalls opinions-

okay so i found out a thing called a "system" where there is one person with several "headmasters" in their minds and im STARTING to think i MIGHT be a system of myself and my oc? I had originally made my oc slightly like me (by that i mean all my unfiltered thoughts as a character) because i felt bored with the me that i usually put out (aka my mask i put on in public to look "normal") and needed times where i could be silly for no reason but NOW... he is now kind of getting more like me.. or am i getting more like him- i cant tell but ive started thinking way more like him and acting like him sometimes for no reason.. I dont have any trauma.. kind of? i mean ive had a couple friends leave me and i dont rlly keep friends all that much and i talk in my head a lot so..?? and i mean.. i KIND of hear my oc's voice? well not like an actual SOUND more like.. when ur reading text and u reconise that its words but you dont actually HEAR hear it u just know it exsists- *sighs* guys.. help me out please.. i can answer questions so then people can help me out more with desiding if i am a system- (and no i dont have DID or UDD or what it was called *i forget what they are called loll sorry..* so i might just be tricking myself ngl..) (AND IF THIS POST OFFENDS SOME ONE I AM SORRY AND I CAN EDIT/ FIX THE POST BECAUSE I SWEAR IM NOT TRYING TO BE MEAN IM JUST TRYING TO FIGURE MYSELF OUT??) (i dont rlly like using "us" though cus both me and my oc use "he/him" and i roleplay as my oc a LOTT so it might just be because i like roleplaying so much that my brain pretends to roleplay some times so i might be a fake system and im making myself mad...) (EDIT: omg i forgot an importaint part but sometimes i feel like i have a phantom limb of my oc??? like he has cat ears [RLLY BIG ONES-] and now i can FEEL THEM... and it doesnt help that now ive learned how to wiggle my ears BECAUSE OF THE SENSATION OF THE PHANTOM EARS.... ohhh god... LIKE I CAN FEEL THEM PIN- OR TWITCH- OR PERK UP DEPENDING ON HOW MY OC WOULD FEEL ABOUT THE CURRENT SITUATION...... uuuuuuhhhhhhhhhhh)