Clear Care contact lenses solution stinging my eye help? - 1

So the other night I put my contacts lenses in the Clear Care case that came with it and left it there for 6 hours (as said); I was out of regular solution so i just filled my regular case (not the clear care one) with the clear care solution. The next morning; I tried putting my contacts in my eyes and it RIGHT AWAY it stung So MUCHH; the pain was unbearable. So that afternoon I bought the opti free regular solution and replaced it in my regular case. So the DAY after ( this morning ) I tried putting it in and RIGHT AWAY it didnt sting but a couple seconds later it was that pain again (not AS worst).

Should I RE do the clear care 6 hour process again and see if it goes back to normal?

Help;
Are my contacts lenses ever going back to not burning my eyes?
l:

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