I always crave for soda 😭 my MIL it can cause baby born with autism...

Since forever, I've loved drinking soda. But since I got pregnant, many people have been advising against it 😭 It's really torturous; I even once slammed my soda can down when my husband caught me about to drink it. He immediately threw away all the soda in the fridge. My mother-in-law said drinking soda during pregnancy could cause the baby to be born autistic. I don't believe it at all. Where did she even hear such nonsense? Can you believe that just a drink can cause autism? Has anyone ever heard of that?