Based on your history and your symptoms, there are two possibilities-a hormonal
imbalance and pelvic inflammation. If you have had natural recurrent miscarriages
, you need to get investigated and treated for the cause immediately. You could be ovulating now if you have regular 28-30 day cycles and this may have caused the spotting as is seen sometimes. You need a complete investigation including a trans-vaginal sonogram, blood and renal profile, hormonal profile along with a thorough examination. Hope this helps.