Best of luck with your first Clomid cycle Saffi.
I'm on my second round of Clomid, also taking 50mg on days 2-6. Generally your Dr will start you on a lower dose, as higher doses may cause ovarian hyperstimulation syndrome, which is rather nasty. They will monitor whether you ovulate or not on that dosage, and possibly increase you if you require it.
I ovulated on my first cycle of Clomid (YAY!!), which I don't think had happened for any of my previous cycles, which were as long as 87 days, so you may not need a high dose to get the right response IYKWIM.
Good luck with it Saffi - I hope you catch the eggie