You received aspheric monofocal lenses from different manufacturers (Alcon and AMO). They are essentially the same lens and should work fine together. (I think that they are a much better choice than the ReStor, which was what your doctor initially recommended.)
I needed a stitch in my second eye, too. In my case, the lens got stuck in the little inserter, and the surgeon had to struggle to get it free without ripping it. The stitch was removed in the office the next day, and it didn't effect my outcome. You'll have to ask your surgeon what happened in your case.