Worth a note that it's not an have-it-or-don't-have-it condition. The condition exists in degrees, not just in binary. So if you have difficulty visualizing more times than not, then it's possible that you have a form of it. As I've heard it described to me before (and I'm not a professional so take it with a grain of salt), close your eyes and think of an apple, then add specific identifying markers to make the apple unique. If you can see it, then you probably don't have it. If you can't see it, then you might have aphantasia. Or, you might just have performance anxiety because I'm asking you to think of it. Either way, it means you might lack something that many people take for granted.
Like you, I can close my eyes and can conceive of something conceptually based on the context of the description, and perhaps in doing that, I can imagine the emotion that such an object might bring. But I can't visually perceive it. If my mind can't make out an object based on description, it will try to substitute it for something familiar. For example, if I'm reading a book and the author explains that a character is speaking on a red telephone with a very specific design, since I can't really make out the design, my mind will just substitute it with any red telephone that I may have seen in the past. But again, I can't actually see it.
And for the longest time, I thought that was true of everyone, and that words and phrases like "visualize" and "picture in your mind" were figurative. And now that I know that most people can do this literally, it's completely changed how I view (pardon the pun) my interactions with other people.