Thanks for the query.
If you are breastfeeding
your baby some amount of fluctuations in the menstrual cycle is common.
Baby movements can be appreciated on around 18 to 20 weeks of gestation.
So the kicks you mentioned could be bowel movements that you are attributing to baby kicks.
You once consult gynecologist get examined and go for one ultrasound
to rule out pregnancy
and also to find out the possible causes for your symptoms.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429