I just hate it

I feel like my brain is constantly working against me no matter how much I try to have a normal flowing conversation with people. No matter how good the conversation is going I’ll inevitably ruin it by randomly asking a question that they either:

A. Already answered two seconds ago

B. One with an incredibly obvious answer

e.g. I asked my co-worker the other day if she got a Jacket Potato and Beans from the canteen, as if there’s a possibility she fucking ordered it from a takeout or something lol

I always do this I guess because I’m terrified of the conversation going dead and I just say the first thing that comes to my head

Is there something genuinely wrong with me or do I just have a serious anxiety driven approach of not thinking before speaking? 

I’m sick of feeling like there’s nothing I can do about this