Learn Dutch: Ik heb last van mijn keel. - My throat is bothering me.

Instead of a single verb, Dutch frequently uses the fixed expression last hebben van, which literally means "to have trouble from" or "to have a burden from". So, Ik heb last van mijn keel translates naturally to "My throat is bothering me."

How could I add wat to this sentence to say my throat is bothering me a little?

You would place wat right before last. Saying Ik heb wat last van mijn keel uses wat as an adverb of degree, and it is a very natural, native-sounding way to say "My throat is bothering me a bit" or "I have a slight sore throat."

Could I just say Ik heb keelpijn instead?

Yes, you can! Ik heb keelpijn specifically means "I have a sore throat" with a focus on the actual pain (pijn). Ik heb last van mijn keel is slightly broader—it means your throat is bothering you, which could be pain, but could also just be a dry tickle, a cough, or a hoarse voice.

Can I use last hebben van for things other than body parts?

Absolutely. Because it broadly means "to be bothered by" or "to suffer from", you can use it for anything that causes you trouble or annoyance. For example, you can say Ik heb last van de buren (My neighbors are bothering me) or Ik heb last van de hitte (I am suffering from the heat).