Trying to gather information about bad caprisun drinks, check details please?

Just now I had a Capri Sun but it tasted funny, so I checked through the clear bottom and there was a small white ball at the bottom of it. I cut it open and poured it into a bowl for a closer look, it looked like a ting white jellyfish or mushroom with string coming out of the bottom. I poked and mushed it with the straw and it wasn t hard but it didn t come apart either. I don t know if I should see a doctor or if it s not that big of a deal.