It took me a couple of weeks to figure out it wasn't simply my eyes going bad. I can still focus in parts of my peripheral vision but the center of my vision is blurry.
There were no symptoms and I didn't have any pain or feel anything.
My suggestion is, I don't care what the internet says or how insignificant it might seem, go to an optometrist ASAP.
Worst case scenario is you spend a small amount of money you might not have needed to. On the other hand, you might catch a potentially large problem early.
Truer words were never spoken. 28 years ago I was working on a drawing when I became aware of an area of distortion, like a bubble displacement, forming just next to the center of vision in my right eye. I called my optometrist who recommended an ophthalmologist that had treated him.
I was given an immediate appointment, which disclosed an enlarged blood vessel that was distorting the retina. If I didn't take care of it immedaitely I would likely lose my central vision in that eye. Back then they didn't have the medications for treatment that we have today, and the state of the art was laser surgery. The difference between success and failure was a 10,000th of an inch.
The surgery was performed immediately as time was of the essence, and the result was successful as my vision was saved. This all happened in less than a day, really, a matter of hours. That's how fast you can develop a problem that could cost you your vision. If you sense something is "off" with your vision have it looked at immediately.