It saddens me that you had to endure the physical and mental trauma of the attack. It also saddens me that until you had to go through all of that you didn't realize how vulnerable you really were.
Now you know and you have taken steps to protect yourself because you KNOW that the police cannot and will not protect you.
One thing I feel obligated to point out is that the "gun" is not your protection. It is only the tool you will use. Your real protection is your newfound strength to fight to survive. That means using your wits and not your muscles.
Get motivated. Get smart. Get training. Get going and live to grow old.