leaves dropping

Hey guys, my plant has been in flowering for 3 weeks now! and sometimes there are leaves falling out i had 3 so far! is that normal? she seems very healthy this is a picture of her 2 days ago.

small leaves basically. none of the buds are affected! and no discoloration of any sort anywhere. Is this even an issue? Because ive heard that through flowering the leaves become very weak because the buds are taking all the attention. (i am a first time grower)

you plant seems healthy! if problem persist we will need more pics to tell!! stocks tho looks thin...

they look fine to me...need a fan on them though to thickin' them up.