Hi, I'd like to help you with your question.
Anxiety and worry are a natural part of being human. With stresses often comes anxiety and worry. You have been under a lot of stress and grief. Along with discovering unresolved anger towards your mother, which may have caused feelings of guilt and hurt you are dealing with stress on the job and caring for your father. You have gone through many strong emotions recently and that is going to take a toll on you.
Yes, as Christians we need to lean on God for our needs. But we are also human too. Many of the people in the Bible had problems, including the disciples. They struggled with their very human emotions even though their belief in God and Jesus was completely without doubt.
Understand that worry and anxiety is about control. It is our effort to deal with the chaos around us. It is also about the future which we know nothing about. We can only control now, and not the future or the past. That is why relying on God is so important. God knows the future and understands our needs. The trick is learning to trust God and not our anxious feelings instead.
Try reading your Bible. Some of the best passages are:
1 Peter 5:6-7
Prayer is also important. Pray whenever you feel you are anxious. Pray each night and morning as well. Ask others to pray for you. You may feel better just knowing others are keeping you in their prayers.
It is great that your husband is so supportive. Rely on him as you need to. Include him in your search for peace so he can better understand you and also to bring him closer to you.
You can also talk with your pastor about the best ways to handle your feelings. Often, pastors are very good at helping people with anxiety because it is a very common problem they see within their congregation.
Consider educating yourself about anxiety and worry. There are many wonderful books that can help. Here are some I recommend:
The Anxiety and Phobia Workbook by Edmund Bourne.
The 10 Best-Ever Anxiety Management Techniques: Understanding How Your Brain Makes You Anxious and What You Can Do to Change It by Margaret Wehrenberg
The Cognitive Behavioral Workbook for Anxiety: A Step-by-Step Program by William J. Knaus
From Panic to Power: Proven Techniques to Calm Your Anxieties, Conquer Your Fears, and Put You in Control of Your Life by Lucinda Bassett
Be Anxious for Nothing: The Art of Casting Your Cares and Resting in God by Joyce Meyer
Most of all, keep your faith and try to move ahead with your efforts to feel better. Sometimes, God gives us burdens so we can learn to rely on Him instead of ourselves.
I hope this has helped you,