My almost 5 year old son was diagnosed with Sen

My almost 5 year old son was diagnosed with Sensory Processing Dysfunction early last year. In addition he has auditory processing and discrimination delays and receives both OT for the SPD and speech therapy.
We are currently in family therapy for my son’s defiance, low self-esteem, high level of frustration, self injury when upset, etc. The LCSW feels that he may have an anxiety disorder, ODD and may possibly have PDD-NOS.
I don’t really have any questions at the present moment because I am so overwhelmed that I don’t know where to begin.
I have been a SAHM since my son was born and I get resentful at my husband when he can escape to work and I can’t. But then I feel guilty that I am having these feelings about our (only) child.
So I just wanted to introduce myself and hope to learn more.

Thanks.

Tracey in NJ