My son walked in on me...

I have been single for a long time, so of course I masturbate and have a vibrator. My son's dad dropped him off today and I didn't know. I didn't hear my son coming up the stairs and he just opened my door. He usual knocks unless something is wrong and when I heard the door open he had obviously been crying so he most likely just opened the door because he was upset and needed to talk to me. Well he just covered his eyes and ran down stairs screaming and went back WITH his dad. Oh god! I called his dad to check on him and his dad laughed at me😑. He also said he didn't know what was wrong with him. He said he just started crying in the car. He thinks maybe he read a text from somebody or something. Ugh... Well he came to me for comfort and got traumatized instead 😩