I
Im after some advice as to whether i could have some sort of possible mental health condition or if im just not a very nice person.
Its hard to explain but i often find myself sort of checking out on relationships and communications both with partner and family. Everything is fine then suddenly i feel myself going cold, i stop replying to messages, i feel as though im not in the mood to talk to anyone and want to be left alone. When they do try and check in or ask whats wrong as ive suddenly blanked them i end up getting frustrated and confused. Its as though i know they have done nothing wrong but i cant bring myself to emotionally connect and even reply or answer calls i become pretty much an introvert. For example i havent spoke to partner in 2 days or family. Idk why its as though i feel lonely or that i dont want to be a burden 
. Tonight he thought he would call round and drop off christmas presents. While this should of been taken as a lovely thoughtful idea, i took it the complete wrong way. I felt as though my space was invaded, what this space is idk. I found myself feeling anxious and saying things like why bring presents, i dont need or want presents they wont fix things.
Please be gentle if you reply i cant understand this myself. Most of the time i am a loving free spirited person then i have these periods where its almost as though i feel hurt and alone and as though i just want to be by myself for days ..weeks.