Protein simulation got distrupted after final run

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Respected sir,
After performing 100ns md or protein, i visualized the .gro file and .xtc file in vmd which showed my protein completely disturpted or streched. Is there any solution or do i have to run my again.
Thanking you in advance.

This is a simple periodicity issue. Make the molecule whole with gmx trjconv.

Sure thank you sir for your kind support.