My ovulation day was the 17th of September, my period is usually the 24th but it was a week late and then I start bleeding very light 3 and 1/2 days ago with light cramps. I have all the pregnancy symptoms. I went to the ER and got a pee test done which was negative, but the doctor I had was very rude and didn't ask any questions. I'm wondering if it's too early. I read that some women don't even get positive tests till later and then find out they are 3 months pregnant.

You will have to wait to see if you miss your next period to test. Make sure you test using first morning urine.

I'm sorry that the ER doc was rude to you, but in reality the ER should be reserved for emergencies such as heart attacks and gun shot wounds, not pregnancy tests.

I agree, I have no idea why you would go to a ER for a pregnancy test ? It must have cost 10 times what a normal test would, or what a free one would be at a women's center.
So yes the doctor would have been rude.

As noted yes you have to wait for another cycle