HELP !!

Laura • Hey I`m laura 19 recently had my baby boy :) been with my fiancé a short time and love him millions !
Ok so I'm about 4 weeks and 3 days been fine up until now as I only found out 2 days ago that I was present ☺ had slight mild cramps but within the past hour I've had 2 experiences of period like cramping 😕 I know my period won't show up but I'm worried? ?