If you have been sexually active ever since you had the miscarriage
, you should indeed suspect another pregnancy
. Since you have already had negative HPTs, I would suggest estimation of serum beta-hCG titres along with a trans-vaginal sonogram for a better idea. If pregnancy can thus be excluded, your symptoms could mean some temporary hormonal
imbalance consequent to the abortion
and should settle down naturally in a couple of months. Please take sufficient rest, good diet and avoid stress. Wish you good health.