In fact, if you are wondering whether you have received the heavenly calling, that would in itself indicate that you have not received it. Those called by Jehovah do not wonder whether they have been invited or not!
فَرُوحُ يَهْوَهَ يَعْمَلُ بِٱلْمِقْدَارِ نَفْسِهِ فِي ٱلَّذِينَ يَرْجُونَ ٱلْعَيْشَ إِلَى ٱلْأَبَدِ عَلَى ٱلْأَرْضِ .‏