I won't judge you for what you did 5 seconds ago, let alone 5 days, 5 months, 5 years--that's the case with most people here. I'm not sure anyone can top what I did--but it doesn't matter. Doesn't matter at all who did what. You started off this life as a child....something happened inside you or outside of you at some point--and you dealt with it, well, the way you dealt with it. You wouldn't be feeling the remorse you are feeling right now if you weren't a good soul, regardless of what you did.
One more thing.... what I did brought on the Scarlett Letter for me-for 8 years. I have "recovered" from that...and it was BAD. ( from judgment alone I ended up going into a shell, total isolation, so not to face people--developed agoraphobia it was so bad) So it took me 1.5 years....and I am 100% back. I assure you, if I "recovered", so can you. Monica Lewinsky does a fantastic TED talk on shame.....no matter what category your story falls in, it's worth a look.
Hugs to you. Start RIGHT NOW. Your future is spotless.