Dont know when hook up was

Question
Ok i have a 2 yr old boxer, I know she went in to heat the week of july 14th some time. We got the male boxer about 2-3 weeks later. This was not a planned breed due to the fact that he was a rescue mission. We did not think they hooked up at all, but suprize suprize she is pregnet. And there is no other pos. father. Good thing he checked out healthy with only afew minor problems. So now my problem is I have no idea for a due date. She has been nesting and will not leave my side for about 5 to 6 days, her milk came in full force yester day, she is licking everyone like they are not clean enough to touch her4 or 5 days, licking her self , lots of tossing and turning at night, heavy breathing, clear discharge, It is mine and her 1st time breeding So Please Help!!!!!!!

Answer
I would definitaly say within the week, if not earlier. Watch for her to start digging like crazy, and constant heavy panting. She'll have a thick, gunky, clear, glob of a discharge within 24-48 hours of delivery. This is the mucus plug. You may miss it if she cleans herself really well. If she has a colored discharge before the first pup is born, call the vet immediately. Let me know what else you're needing help with, and I'll be happy to help!