Is it ok to get hard with my mums friend and her daughter ?

I am 14 and we went to stay at my mums friends house when we got their it was late so my mum went to bed so I then put my pj bottoms on I stayed up and watch tv with my mums friend and her daughter (she's 13) so we were watching tv I was in the middle of them I fell asleep for about half an hour when I woke I herd them both laughing I asked why they siad look down there and I had a full on hard on I am about 5/6 inch so I big tent in my pjs with some pre *** coming out they siad don't worry and then siad go and sort my self out in the toilet so I did it was very embarrassing is this ok thank you