Isn't exclusive bf supposed to hold off periods?? Ds is 9 weeks and i have just had my period. Really painful too! He feeds on demand, sometimes going 4 hours between feeds in the daytime, but at night, usually feeds at 10pm then goes until 4am. Just wondering if i am not feeding him enough, and that's why my period has returned? Midwife said i need to feed at night to keep my milk(???) but........ he sleeps! Thanks