Thanks for the query.
The possible causes for your problem are :
- Possibility of pregnancy
. Sometimes urine pregnancy test kit may not detect early pregnancy.
leading to cervical erosion etc.
So you once consult gynecologist, get examined and go for ultrasound
By this the possibility of pregnancy can be ruled out.
Then you can take tablets to control the spotting.
If the symptoms repeat in next cycles better to go for hormonal evaluation once.