why do my thoughts feel so weird?

recently ive been getting these weird thoughts/feelings. they're very hard to describe so bare with me. these thoughts they sort of feel like deja vu, but I'm not remembering anything that's happening in the present moment but something completely random, like shapes or like the order of my family members or a timeline looking thing, or even certain feelings. these thoughts trigger randomly but I can trigger than by remembering how something felt to me, for example the sensation of me pstting my dog and the feeling that that gave me. it almost as if the feelings/sensations I've associated or felt with certain things feel corruped in some weird way. like these feelings/thoughts feel so familiar but I cant put my finger on them. please can someone help me because it feels like I'm going crazy just by writing this out. could it be a symptom of tetany? because I have that but these feelings are something completely new to me, please someone help because these thoughts distress me so much