Good morning ? girls. ? My friend's period has been absent for 24 days…

Good morning ? girls. ? My friend's period has been absent for 24 days now, there's a delay, but the test is negative. Symptoms include pain and pulling in the abdomen like PMS. The gynecologist says it's normal because the cycle will recover, you just have to wait. Has anyone experienced this? Did it come back after a few days?