[Spoilers Main] Was Khal Drogo responsible for what happened to him?

In A Game of Thrones, he gets injured after a battle, and Dany asks Mirri Maz Duur for help. However, Drogo repeatedly ignores Mirri’s warnings, removes the bandages, and starts drinking alcohol. This brings him very close to death. Do you think Mirri poisoned him? A lot of people believe so, but I think he was just being reckless.