I'm at a total lost here for what just happened.

Let's start by saying I planned on breeding my bitch during her 3rd heat. I started out getting her progesterone levels tested 8 days into her heat. Her first results were .32 (early). 4 days later she was at .64 which was a weird result. 3 days later now being 14 days into her heat she was at 3.08. This is when I scheduled a mating day with her stud. 3 days after that she was at 7.28. She mated the very next day with no tie. She was very receptive and flagging. So we put her with the stud again the next day while holding them together. We had a slip breeding once that day. The next day she was still flagging and very receptive so we tried again....still no tie.  We thought for sure she was no longer ovulating because we were now 4 days after she had reach 7.28. However she was still flagging excessively and receptive.
The day after she reached 7.28 we mated for 4 days (only a few hours a day) with only one slip breeding.

After she stopped flagging as much we stopped but she still bled lightly for 3 days after.
I thought the bleeding stopped right before ovulation. Am I wrong? And is there a chance for puppies still? Not sure what to expect.
Thanks guys. Sorry this is my first time so I am still learning. Plus I know all dogs are different. 
I have a German shepherd.

All my bitches 'bleed' right to the end of their seasons, as do many others.

The idea of the straw coloured loss seems to only apply to some.

For me, and I know I'm 'old school', I feel all this testing just complicates matters!    I have always gone by how my bitches react (much as some can be hussies), and perhaps more significantly provided the dog is experienced, how the stud dog does too.  

A slip mating isn't a big deal - as long as there's penetration.   Most breeders prefer to have a tie, but it's not vital - one of my stud dogs never achieved a tie but only missed to one of the half dozen bitches I let him mate with.  She came back on her next season to my other stud dog and missed again.  Next time she went to another stud dog not in my kennel, and - same.   Clearly she wasn't meant to be a mum.

Bleeding to the end of a season - well most of mine, mated or not, went to a pale straw colour when in standing heat and that usually stayed that way with increasingly less discharge to the end of the season.   However one we had mated, twice to an outside stud dog (as in not mine) and came home and went back to a more blood colour discharge through the final week or so.   I thought she's never taken.   She had an uneventful pregnancy and 9 puppies.   Probably the best we'd bred as it turned out.

Mine bleed red throughout every season mated or not. Never seen straw colour discharge
Optimum time to breed is 2-4 days after ovulation so you have covered that period ( presuming your results are in Ng and not Nmol in which case you would be too soon )
Have never had a slip mating but the sperm rich fragment is released as dog is doing the toe dancing trusts, the benefit of tie is prostatic fluids are released to wash sperm rich fragment close to cervix and beyond.
Bitches can certainly get in whelp from slip matings but would consider the % of success rate is somewhat reduced.

Okay thank you all for the info! I guess we will just wait and see what happens!

Same as klb, my bitches bleed through mating, and to end of the normal season.  In 45 years I've never seen straw coloured.  Before anyone tells me "well, what the books say is" I can confirm that not one of my bitches ever read the book.