Nothing can proceed until this letter comes from the Tribunal. I don't even know what it's about.
The letter will almost certainly contain precautions and conditions for your convalidation (“marrying in the Church”). This is standard procedure where there is concern that the conditions which precipitated the nullity of the former union may still be present, at least in modified form, thus endangering the present or any future union. Often it does take some time for the tribunal to prepare this addendum, because some research and consultation is usually involved.
My question is — now that all obstacles are out of the way, how is my present marriage viewed by the Church? Is it considered valid?
My point above is that, according to the tribunal, not all obstacles seem to be “out of the way.” Your present union is not considered valid until convalidation takes place. However, you are not considered to be “living in sin” if you and your husband are not having marital relations.
Can I still not partake of the Sacraments? Can I still not go to the Sacrament of Reconciliation? When can I go to confession? Will it be immediately before my husband and I can finally be married in the Church after receipt of this letter? And not until then?
Ordinarily, you would be allowed to partake of the sacraments from the beginning of the time that you stopped having marital relations, provided that you both
willingly accepted that status for as long as it takes to clear the way and convalidate the union and provided that public scandal is avoided. Evidently you have not discussed this with your pastor. He is the one who has the authority to admit you to the sacraments once the proper conditions are fulfilled, so the sooner you see your pastor, the sooner you will know what can and cannot be done in your specific case.
David