according you description the possibilities are,
-your bleeding could be spotting during ovulation and then your present symptoms could be part of premenstrual syndrome
-possibility of pregnancy
, in that case after periods you might have had ovulation early and your spotting could be implantation
so you better consult gynecologist and go for blood test
for pregnancy, which will rule out the possibility of pregnancy, in case of negativity you will possibly get periods soon, if not you can go for tablets for withdrawal bleeding.