I was going to suggest vitex and maybe b vitamins also but thats already been done

Wanna give you some more :hugs: though and say I'm another with a short luteal phase of only 11days (sometimes less) and the months I've gotten pg it hasn't made a difference that I'm aware of. I wouldnt be surprised if still BFing plays some part in things being irregular I'm pretty sure it affects me... But I've always been BFing when I concieved again so no if you and dd are happy to keep going then do. I guess i just wanted to reassure you that just because things dont seem 'normal' does not inherently mean you don't work properly or can't have another baby! I hope it all works out for you really soon tho hun.
PS spotting could be from implantation if it hasn't progressed to anything more.