Why do I have so many thoughts, as if there is a storm of thoughts?

It is a great thing because this is called curiousity you are just wondering about things and this is a great quality in a human being

Maybe it is because you tend to overthink things and it is hard to control your thoughts without thinking of something else and then something else pops into your mind and it keeps happening until there's a whole lot of thoughts that it is starting to affect you.

Because you are human being and unless these thought are conflicting with your own personal life, in which case you must seek professional help, you'll be just fine. Sometimes we over think things and our thoughts get all messy and mixed up because we're going through some hard time or encountering a lot of changes. We gotta try to take it easy and put our thoughts in order and do our best to clear out minds

Sounds like your mental pantry is full! Look up bullet journaling! Or really any type of journaling. Our minds are super busy and there will always be a stream of consciousness growing. That is typical. But if you feel the thoughts are getting too fast and too furious I know tons of people have benifeited from journaling. Also let your physician know, you may have some underlying issues that need to be addressed. Best wishes!

Because I’m a thinker and I worry to much about things I can’t change and think less about things I can.