Flashed my cleaner

So i was in work early one day and getting changed in my office to my work trousers. I heard the cleaner outside. She was 18 and decent build with a great ass and legs and i would say c cups boobs, blonds hair. She started chatting so i said I couldn’t hear her, some i stood in the doorway. Knowing my trousers we’re open and my cock would be showing. I was already excited by the idea so was semi hard. She came closer, about 10ft away and was starring straight at it. She also carried on chatting. I was shaking with excitement and felt my cock growing and could not control it so i left and went back in my office, behind the door. I tried bending my cock away but it was too late. Due the the height of arousal, i was already building to cum. Then she came in!! I turned my back to her, but felt her standing behind me. She said something but didnt catch it. My cum started to pump out and she must have seen it hitting the floor. She then left and my heart and body was shaking.