I will assume you are a christian, and the Bible says that “God did not give me a spirit of fear, but of POWER, LOVE AND A SOUND MIND.” and God said “I will never leave you nor forsake you.” and the word says “I have never seen the righteous forsaken, or their seed begging bread”.
Remember that fear is the opposite of faith, and God knows if you need extra help, and he will give it. There is no evil that can claim our soul for it belongs to God, and men have no power over it, as long as we are faithful.
Now for the practical, if you are not an expert shot, and if your husband is not a gun user... then having a gun will not help you....unless it’s a shotgun and you can’t miss...but you must have the “will” to pull the trigger when threatened or the intruder can take the gun from you and use it on you. Count on your wit, and find another type of weapon that fits your circumstance. Mace is a good example, it can be sprayed in the eyes so you can run away, and is good on a single perpetrator. Have a safe room to escape to, with several deadbolts and a solid wood door...it needs a phone, and a baseball bat....make sure you can block a window or other access to it, and a way to escape it into an attic space, or another way out in case of fire. Do not panic, and do believe positively and do not fear. Have a plan, and commit it to the Lord. Know your neighbors, your area and make an alternative plan, and believe you will be successful in that plan is needed. The Bible says “be it to you according to your faith”.
Words of wisdom..... thank you!