You are not losing your mind. As posted mood swing are common. Anger, memory, and sometimes sensory loss to olfactory happen. You are in good company we know because we have lived it to. You will get plenty of advice so ask lots of questions. Vent if you have to, it's OK. Better to do it here than direct it at your loved ones. You may want to watch with your family, "You look great parts 1 thru 6" on you tube.

mTBI can be hard to cope with so a good support system is a tremendous help. Try to rest, especially with regard to sensory input. I.E. TV,computer, socially... These things can overload you and make your symptoms much worse. Patience is key as recovery takes longer than any of us wants it to. Think months not days or weeks. I am so sorry this has happened to you.