How do you say "question", and which counter should be used?

Question

I'd like to know the word for "question" itself. For example if I wanted to say:

I have a question

わたしは (question) があります。

I've had a hard time finding an answer to this question because when I search, Google turns up results for question words instead, and I'd rather ask a fluent speaker than a dictionary.

I'd also like to know what counter should be used for counting questions, and if it is regular (so if, when pronouncing the number before the counter it just follows the regular sequence of いち, に, さん, し etc. or if there are any exceptions.)

Apologies for asking three questions, I can move them onto separate threads if need be, but they're all related which is why I didn't.

Answer 1

しつもん（質問） means question, so the sentence would be わたしは　しつもんが　あります。 Interestingly the counter for question is もん（問） which is the last syllable of しつもん source。

I don't know how to say you have three questions, as you can probably tell I'm not a native speaker, but I think you can say I have some questions, using いくつか（幾つか） which means some, a few or several source. So the sentence would be like this わたしは幾つかの質問があります or わたしは質問がいくつかあります。