What Happens If I Wear A Regular Contact Lens Instead Of A Toric Lens?

I recently went in to get contacts for the first time and was told I would need a toric lens for my left eye because of a slight astigmatism. So I was given a toric lens for my left eye and a regular lens for my right eye. A week later I could see just fine with my right eye and still blurry in the eye with the toric lens. So I went back and was re-examined, and given a different toric lens to try. Still blurry in that eye. The problem is every time I blink or get up and move around the lens shifts or something and distorts my vision very badly. The question is, what would happen if I just used a regular lens instead of a toric lens. Seeing as how my glasses never corrected for my astigmatism and I could see just fine would the same be true for contacts or would it not work seeing as how the contact actually rests on the eye? Thanks

Can I Just Buy Over The Counter Reading Glasses Instead Of Filling My Glasses Rx?

I just got a prescription for glasses- Dr said that I should use them anytime I am reading, on the computer, watching tv etc. My rx is +1.25 in both eyes and astigmatism in my right eye only -50. Would I be able to buy over the counter reading glasses and get the same results?