When you have a medical issue, do you hesitate to tell your doctor what you think it could be?

I went to the ER the other day for this headache crap I’ve got going on. I told them I thought it may be sinus related, and told them about the water in my ears (which is still there.)
It was just a thought, but that’s all they looked at. They didn’t run any tests, no scans, nothing. Gave me a shot for nausea (I have only a little, sometimes. Certainly not shot worthy) and another shot for pain.
Not sure what either of those were supposed to do.

If I hadn’t said anything at all, I think they would have looked further.