starting zoloft 25mg, what are signs I need to be warry of?

Hello, the title pretty much sums it all. I've heard of and my doctor has also warned me of bipolar people going manic because of this medication. If that happened to you, what were the signs of medically induced mania and when did it start to manifest (i think it's important because you usually can't tell when you're manic) thanks for reading thus far!