heard my mum having sex...

I live with my grandmother who I frequently hear saying:
"Faster, OH GOD"


You've got it easy.

i heard my mum having sex yesterday morning... she's divorced from my dad but hasn't told me about any boyfriend of hers but i know someone shes recently met slept over a couple of weeks ago but i never saw him, and yesterday morning i innocently went to get some clothes out of the wardrobe in the hall outside of her bedroom and heard heavy breathing and the mattress creaking.
im not a prude at all and i know everyone has sex and its normal etc. but i'm really quite disturbed by it and i found it quite disrespectful because she doesnt even pay the mortgage on the house, my dad does, and therefore she has no right to say its her house and she can do what she likes. she knew i was in and i would really have appreciated it if she had waited until i was out. i know she would hate it if i had sex while she was in the house.
what was even worse to me is that she snuck the guy out and acted like nothing happened.
am i being overly emotional about this? i cant really look at her in the same way and i dont know how to confront her about it. normally i talk to my dad about all my problems that i have living with my mum but obviously i wont talk to him about this. its stressing me out a little bit and i already have so much exam stress its making me angry at her

I think you're over reacting. She's entitled to have a sex life.

my point was that she should do it while im not in the house. i dont have sex while shes in because i know she wont want to hear it.

I heard my dad and his girlfriend having sex a few weeks ago. I tried my best to ignore it with headphones in for a while, but after a while I found the only solution was to do a really loud fart. Totally undignified and I'm not sure why I'm even sharing this information but it worked. They stopped straight away.

You're dad can't have a lot of stamina if a fart covered it.

Don't you remember?

I heard my dad and his girlfriend having sex a few weeks ago. I tried my best to ignore it with headphones in for a while, but after a while I found the only solution was to do a really loud fart. Totally undignified and I'm not sure why I'm even sharing this information but it worked. They stopped straight away.