Hi-
I am really sorry that you had to go through this. I know the person was a friend or previous friend, but what they did was WRONG! You need to tell your husband and the police! Keeping secrets from your husband will only lead to more issues in the future and him possibly neglecting your little one if he finds out later.
If you are not in any danger physically of telling your husband, I would sit down with him right away and explain what happened and how you have been feeling…why you kept it from him.
I hope this helps and I will be praying all goes well!
Luv- Molly