I I realized I forgot to make two sajdas in the last rakah while in second tashahud

As-salam alaykum, I couldn't find anything that answered my questions so here's what happened. today while I was praying salat al dhur during the last rakah i had doubts wether i made two sajdahs or one sajdah at first i thought it was just wiswas so i ignored it but i started thinking about it and i realized i might have i actually made one sajdah. I was already in the second tashahhud so I made sujood al sahw right before taslim do I have to pray my salah again?