1 period since february 27 (csection) which was 3 months ago and occasional cramp and brown spotting but thats it. not breastfeding. normal?

Yes: Return of normal ovulation can take a few months. If no menses by 6 mos, see gyn.

Thanks for asking!: Amenorrhea can be a results of normal pregnancy, so blood test is needed to rule out this first , if negative then other causes such as thyroid disorders, prolactin disorders or obstruction of the genital tract need to be considered among others.