3 periods now 1 day late

Cassandra • Boy mom💙💙
I'm almost 6 months post partum and have had 3 periods so far pretty well regular for the most part...now was expecting my 4th but am a day late cramping and lots of discharge I constantly check myself because I feel it coming out but no blood...it feels like my period though(the cramping) I EBF and pump once a night,has anyone else had this happen and be ok,I'm freaking out a little. We do use a birth control method also