One time divorce means it’s done after 3 months of separation?

My husband said in text msg that ‘I m giving you my first divorce’ it was 6 months back. We didn’t meet in this period and he didn’t say he took it back. And again after 4 months he said to me ‘I m happy to divorce you’ So it means I have got the divorce already ? And I can remarry according to sharia as my court case is still pending decision.