You did not point out whether you agreed to make khul` without compensation or you agreed to give a compensation but later he did not take it. According to the majority of scholars, khlu’ without compensation is not valid and thus turns to be a revocable divorce. The following scenario you narrated could be a kind of revocation of the divorce, which means that are still his wife now.

 

Regarding your second question, the wife in this case continues the `iddah of the first divorce as long as the husband has not taken her back and has not had sex with her during that `iddah.

 

Important note: These answers are in response to your exact words. Still issues of marriage and divorce need careful investigation from the mufti. Thus, it would be much better if you can find a local imam or mufti and present the case in detail before him; because sometimes minute details change the whole case.

 

Allah Almighty knows best.