Wanting to get re-married but not divorced

Respected Mufti As Salam o Alaikum
My husband is from Bangladesh, he left for his country in 2002 and never returned. I have a daughter with him, she is now 14 years old and has cerebral palsy.
My parents would like for me to consider re-marriage. However, I am still his wife as no divorce etc had taken place.
I would really appreciate some advice.

Jazakallah