Unfortunately today many times we receive calls regarding this question, sadly as we are mostly Muslims by default and not Muslims by choice, this has prevented us from studying the Deen of Allah in detail, so we have picked a few videos on this topic by prominent scholars who give us their opinions in detail and highlight the correct procedure that must be deployed.
The sheikh outlines that the process of talak during the wife’s menses is unlawful therefore in our opinion it is not permitted and renders the talak invalid.
Sahih Muslim Book 9, Number 3486:
Anas b. Sirin reported: I asked Ibn ‘Umar (Allah be pleased with them) about the woman whom he had divorced. He said: I divorced her while she was in the state of menses. It was mentioned to ‘Umar (Allah be pleased with him) and he then made a mention of that to Allah’s Apostle (may peace be upon him), whereupon he said: Command him to take her back and when the period of menses is over, then (he may divorce her in the state of her purity. He (Ibn Umar) said: So I took her back, then divorced her in her purity. I (the narrator) said: Did you count that divorce which you pronounced in the state of menses? He said: Why should I not have counted that? Was I helpless or foolish?
However we highly recommend that you seek advice from your local Masjid as they will know your situation better than us as they will need to consult both parties before issuing their opinion.