What is wrong with me /is anything wrong at all?

For a while now i have been having like memory loss it you could say. Its not like forever gone it just like goes away then comes back sometimes. For example ill go into my closet or into a room and know im about to get something then ill just stand there not remembering what i said i was going to get for some reason.. sometimes my memory comes back and i know what i was there for after trying hard to remember for like 5 minutes and sometimes i just leave that area because i totally forget what i went in there for. Its been happening for over i month now im sure and i would just like to know why or what it is that is making my mind do this. Something weird that came with this also is that when someone says something to me or just out loud ill sit there for a second and then it feels like nothing was said at all or that my mind was just imagining that someone said something but they really didn't. That also happens to me if i say something and stop in the middle of my sentence i cant really remember what i said or im not sure if i actually said anything at all or if it was just in my head. I really have no idea what it might be that's making this happen to me but if you know or are a doctor please help explain why this is happening or tell me if i have some type of thing that's wrong with me making this happen if you can thank you.