1999 Saturn SL1 Starts hard and eventually stalls.

I just changed my plugs, wires, fuel filter, and did the routine oil change. I want to start off by saying my father bought this car brand new and I am the second owner of it and absolutely love it! Now to my only problem with it. The issue started about a month ago after I had all this work done on my car. I was at about a quarter tank of gas, which I never let it get that low usually and coming to a stop light, came to a complete stop and it shut off. Started right back up. I then went to the gas station to fill it up thinking that would help, which it did, but on the way I was going around a corner and it stuttered really weird. Now about two weeks ago I noticed it starts funny. It won't actually start on the first try, I let it sit for five seconds after my first try and fires up like it always has. The original problem has gotten to the point where I can't let my car get below 3/4 of a tank otherwise it starts acting up! As for the starting issue I got my battery starter and alternator checked and they came in fine.