I am unable to recall some of the things I did in the last two months. Please help.

Hello doctor,

I have not been able to remember some of the stuff I have done these past two months. It has actually been a problem for around five years, but it was not this bad. I have had entire days missing from my memory, and people around me have said that I have done or said bad things to them, some even showing proof. Now, sometimes I have an attack. It comes randomly, but also when I try to tell people about this too. During the attack, it is hard to breathe, my hands shake, and my heart races, but I feel the need to struggle against it because every time I give in, I forget again. These attacks have only been there these past two months. Please help.