Hello Aud,
First of all, I would like to point out that your social security number has not been removed, but that you have been attached to your husband's file following the registration of his S1 form, mentioning you as a member of the family.
He is therefore the main insured person and you are his "beneficiary".
To find out more, I suggest you read this article from "centre des liaisons européennes et internationales de sécurité sociale (Cleiss)" entitled: You are retiring to France as a pensioner from a European Union member State, Iceland, Liechtenstein, or Norway.
All the information recorded in your personal file has normally been transferred at the time of this attachment.
If you receive notification that your mutuelle has not been declared in your file, I suggest that you send it an "attestation de droits" so that it can set up Noémie transmission.
You can download this attestation from the section "Mes démarches" of the Ameli account of your husband. Once the mutuelle has been set up, you will see it in the "Mes informations" section.
Finally, I would like to draw your attention to the fact that some contributions may be deducted from the reimbursements made by your caisse primaire d'assurance maladie (CPAM).
To find out all you need to know on this subject, I recommend that you read the articles on our ameli.fr website entitled: "La franchise médicale" and "La participation forfaitaire de 2 €".
If, despite these clarifications, you are still not able to resolve your problem, as confidentiality rules do not allow us to access your file on this forum, please contact your CPAM either on the french speking advice line or on the english speaking one.
All the contact details for these phone lines are available in this topic: How to call the French Health Insurance Advice Lines?
Have a nice day.
