You will have to go through the annulment process.
JMJ + OBT
As another forums member noted, a marriage between a Catholic and a non-Christian, when the proper dispensation is given by the bishop, is considered canonically valid and blessed by the Church, but is not considered to have the character of a sacrament. It
is possible for such a marriage, upon investigation, to be declared null by the Catholic Church, and for the same reasons that a sacramental marriage might be declared null; in fact, the investigation and trial process would be the same.
It is also possible for the Catholic spouse (or even the non-Christian spouse, if later he/she converted and the marital separation was never reconciled) to petition the Pope for his exercise of what’s called the
“Petrine Privilege” – in which case the valid but non-sacramental marriage (already ended according to civil law) is
dissolved (not just declared null or dispensed) in favor of either
(a) sacramental marriage,
(b) entrance into religious life. For the latter, the superior general of the community to which entrance is sought must already have agreed in writing to accept the (wo)man as a candidate, and though the decree from the Pope is to be sought before the candidate becomes an aspirant/postulant, the dissolution is only understood to take place simultaneously as he/she makes final profession of vows some year later. In fact, if the (wo)man doesn’t persevere and leaves the community prior to final profession, he/she will still be married in the eyes of the Church.
In the Hearts of Jesus and Mary.
IC XC NIKA