Mona God bless you. First, please go to the doctor and check your stomach out. Let us known. Our mind is a battle ground for satan or he would not have such a fight. his doorway for access is pride, unforgiveness, doubting God, or lack of trust,ignorance, weakness anything that is contrary to the word of God, that is his entrance.
So,if a robber was loose in your community, wouldn't you close all the doors and window? but now you are going to do it in the spirit. This calls for obedience in Christ. Jesus says "if you love me, you will obey me". He also says "if you abide in my word, you are my disciples indeed. And the truth shall set you free".
Now the spirit of fear comes from satan. "God does not give us a spirit of fear (so fear is a spirit) but of power, love and a sound mind. so when fear of this or that about a situation or circumstances, you pray over it, trust in the Lord. For lack of trust, and faith equals fear. So harm yourself with "for the Lord has not given me a spirit of fear, but of power, love and a sound mind.
For the word of God word says "Though we walk (live) in the flesh,we do not carry on our warfare according to the flesh and using mere human weapons".For the weapons of our warfare are not physical, but mighty before God for the overthrown and destruction of strongholds. So there are strongholds that call for deliverance.
Castings down arguments and every high thing that exalts itself against the knowledge of God. (these kind of imagination wants to take the rightfull place of God where He belongs in your soul. Just like satan wanted to sit on God's thrown and received worship) Bringing every thought into captivity into the obedience of Christ. and being ready to punish all disobedience with your obedience is fulfill. So when those thoughts come to your mind says "I cast you down in Jesus name". Stay in the word of God. Father, I pray that you will give her revalation of your words as she given herself to study your word and apply it in her everyday life and all her circumstances. Father I pray that she will feast on your daily bread. I pray that you will let her know that she has authority in Christ to stand up against the enemy and his devices because you have given her power love and a sound mind in Christ Jesus... be encourage