If I have understood correctly, you had a wine with 3 bottle's worth of headspace, under airlock, for 4.5 to 5 weeks. I think your wine will be just fine. One consideration is whether it was degassed. The gassier it had been during that time, the better off you will have been. Also, when you stabilized, I assume this meant you added k-meta. K-meta will help prevent oxidation.
But, bottom line, how does it taste? If it tastes fine, it is fine! If tastes oxidized, then you have a problem. (Personally, I would doubt it will be oxidized!)