Ob-Gyn questions? Ask a gynecologist online.
if bleeding lasts longer than 2 days, its´s for sure not caused by implantation, due to hormonal imbalance cycle can vary like this. Concerning the desire to become pregnant I would recommend the use of monk´s pepper (Vitex agnus-castus, over the counter at pharmacy), this will regulate the cycle and rise the chance for pregnancy.
Hope you will succeed soon, kind regards,
Dr. N. Scheufele
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Thanks a lot, all the best for you,