Not at all, NX NASTRAN is a FEA solver, do not compute fatigue, you need either DURABILITY module under SIMCENTER 3D, or if you are "FEMAP with NX NASTRAN" bundle user you can take a look to winLIFE fatigue analysis module. Also you have LMS Virtual.Lab Durability.
Simcenter Durability is an add-on to Pre/Post that you can use to validate the structural integrity of your structural model over its entire life cycle under various simple or complex loading conditions.
winLIFE is a fatigue standalone software tool that is integrated also with FEMAP and takes advanced of stress results from NX NASTRAN solver, see http://www.stz-verkehr.de/winlife.html
Read NX Nastran FE model and stress results (N load cases), define Time histories (for each load case), define material properties (Stress o strain). --> https://www.lifing-fdt.com/: Calulate stress histories, make High cycle, Low cycle fatigue and crack propagation fatigue analysis