I have done this, and it didn't give me enough time to recuperate i don't think. I did recuperate though after another 12 week cycle after that and it only took 9 weeks. Anyways, what did you run? I would say to be safe, give yourself 5 weeks after the cycle ended, so like 1-2 weeks after clomid depending. Not that big a deal though if you used a longer ester i don't think.