Hi! I Am 42 Years Old. I Am A Divorcee.

Hi! I am 42 years old. I am a divorcee. I married 33 old 2 ND time already I am having 2 children for my 1 at husband.now he want a baby for him. I am not still family planning. Now last 6 month he took Escitalopram tablets 10mg my period was last month 28th l don't know l conceive or not l use pregnancy detection kit. But result was negative. If that tablet affect that? And what about my period . I am in confusion. Pls answer me