Yes, you definitely should see a doctor asap.
Your symptoms could be diabetes or they could be something as simple as a urinary tract infection.
Hope you feel better soon.
How do you know if you have hyperglycemia? Well, remember the "3 More, 1 Less" symptoms. First you have More Thirst for water, More Hunger for Food, and More frequent toilet visit. And if the condition get worse, you will notice drastic weight loss which will result in Less body mass. When you reach the Less phase, that is when your body cells start to degenerate which will result in the malfunction of vital body organs.）