Did I make money in other states?

I live in Colorado, but my company is located in Texas and I telecommute/work remotely. I travel occasionally for work (quarterly) for large business meetings in Texas, otherwise I'm still living and working in CO. 

 

Did I "make money in other states"? I've seen several questions on the topic, but all I got from this is "it's tricky." Thank you in advance, as it's the first time I've had to deal with this tax situation.