Thanks for the query.
If there is any possibility of pregnancy
better to rule out that first.
You consult gynecologist once, get examined and go for one ultrasound
to rule out the possibility of intrauterine or ectopic pregnancy.
If that possibility is not there, by examination and ultrasound other possible causes of pain abdomen and inter-menstrual spotting like pelvic inflammatory disease
and cervical erosion can be found out and treatment can be taken accordingly.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429