I've name changed but I'm a regular poster.
My DP and I have been together for 12 years and have 2 children. We do have troubles like anyone else but we have always been happy and I love our life together. Earlier this week he complained of an embarrassing problem and subsequently refused to go to the doctor. I eventually dragged him there and went in the the GP's office with him where he showed her some sores he has under his foreskin. She said that she appreciated it was awkward but that to her it looked like an STI. My DP said that it was impossible and it must be something else and the GP asked me if I thought it could be possible and had i been with anyone else and I said no. (Completely embarrassed). She said he should go to a clinic and have some swabs and if it happened that it wasn't that (but she felt fairly certain that's what it was) then they would refer him further.
We fought in the car with him saying that my silence was me not trusting him. I said I did but that I had felt humiliated and just would prefer him to hurry up and sort out a clinic appointment so we could put an end to it.
Our relationship is kind of sexless at the moment. I feel quite low and my confidence has taken a knock after the birth of our second child. We hardly ever go out and I know I've been hard to live with recently so the idea that he would be with someone else wouldn't be so far fetched. Except until today I would never have even thought about it. If you knew us you would probably laugh at me thinking he would cheat, but a GP confidently says STI it's hard not to feel like I've got some bad news coming my way.