Please seek help from your pastor IMMEDIATELY. Call the parish office and ask for the next available appointment time, making sure to mention that this matter is very serious and urgent and that waiting to speak to him could be dangerous for your life and health.
I fear that you are right. Your husband lied and deceived you. If I were you, I would immediately cease physical relations, separate and initiate divorce proceedings. Then I would seek an annulment. You definitely have grounds for an annulment.
I would also seek counseling ASAP, to address the suicidal thoughts and feelings of betrayal and anger that you will have to work through.
I am praying for you right now. I am so sorry. God be with you.