jandj+1, I'm so sorry to hear about your miscarriage.
Before weaning/trying Clomid, why not try just the progesterone? I'm no doctor, but what my doctor did was start small and then work up from there if that solution didn't work. She started me on 200 mg of prog., and when that wasn't enough, 400 mg. If THAT hadn't worked, then she'd do Clomid. Clomid has far more side effects than progesterone, however, so I hoped to avoid that. You might consider taking Vitex or Fertility Blend (which has Vitex in it) as a more natural Clomid. I took Fertility Blend for a few months and the month I got pregnant was also the only month I got a very dark line on my OPK, so I felt like I got a strong ovulation that time. Maybe coincidence, I don't know.
Julia's Mom, I was the same before having my DD. Very normal cycles. That's why I assumed breastfeeding was the cause. For some women it may be, but as I said, extreme stress did it to me. I didn't have a problem with cervical fluid, but I took Fertility Blend until ovulation, which has things in it to help increase your quality of CM.
MichelleAnnette, in the spotting group I have (that is no longer active) many of the women noticed that weight/exercise DID seem to have some relationship with spotting. Most women were either average or below average weight. I know of one woman who cut down on exercising a lot and that is how she was able to deal with her issue. When you say your luteal phase is normal, are you counting spotting? My "actual" LP was 14 days but several of those were spotting (at or before 10 DPO) so it was a problem for me. If your spotting starts AFTER (not on) 10 DPO then you might be OK . . .11, 12, 13 DPO is even better and most likely not an issue at all.
BTW, if it makes you feel better, I would say all but one woman in the group got pregnant. She may have gotten pregnant, too, but hasn't updated in a long time. Her DH had issues, too, I think.