What are my next steps?

Hi IM's...

So I wrote in some time ago about finding out that the father of my child is now in a same sex relationship and how I was going through family court....

So my son returned home to me last year after his father took him. We obviously landed in family court and I got custody of my son after 9 horendous months of him being away from me (had been with me since birth).

My son had not seen his dad for 7 months until the weekend just gone. His father is ordered to see him throughout the year (once every 4 weeks and half holidays). He simply hasnt shown up. My son also flies interstate every so often for his visits.

My son has spent the weekend with his father and his fathers boyfriend. Last night I saw my son drawing extremely detailed pictures of two penis'. When I asked him what they were he told me they were his dads penis and his dads boyfriends penis and that his father had shown my son these pictures on his phone over the course of the weekend. They were naked photos and other naked dress up photos of him and his boyfriend.

When family law court first started, my son told me that his dads boyfriend had touched his willy. I reported this to child safety, my lawyer and wrote it in my affidavits but was told to be very careful about my accusations because I had no evidence. I was made to feel like my sons expressions were invalid and that I was a liar.

After my son showed me these drawings i asked if they had taken photos of his willy and he said no. I said remember how you told me (such and such) touched your willy, has he done it again?

He told me that he has. I asked how, was dad there, how did you feel, how did he touch you. My son told me that this happens in the shower (why the fuck is this man even showering my son?!) and happens when his dad isnt around. He told me hes not allowed to tell me because he will be in big big trouble. I reassured him that he can trust mummy and it is our secret and that no one is allowed to touch his willy only the doctor. I told him his secret is safe with me. I have video recorded this and he was quite embarresaed and destressed but really opened up to me about what happened. He then got in the shower and showed me briefly how he was touched but was overcome with fear and shame.

Today, I have spoken with CPIU and my lawyer. I feel sick. I had a gut feeling about this but pushed it aside as I was told I have no evidence and that my concerns arent valid, Im just being spiteful..

Im still in serious shock and I dont know how to deal with this and I keep questioning myself about whether this is true or not but my heart tells me it is I just dont want to fucking believe it.

I just need support and Im shit scared of breaking my little boys trust when he goes to CPIU for an interview.

We have had an extremely traumatic last 2 years and just when I thought things were settled this sick shit happens. How can a father do this to a child or be with some sick fucker that has stolen my sons innocense, sense of security and safety, his childhood!

Im doing the best I can and would really just love some support and info about what I do now

Xx