My answer is similar to that of AJ.
In your post you said your symptoms started 10-11 weeks after the last encounter and then you got tested? This is loads of time so its safe to say the tests you did were conclusive so the already slim risks are now reduced to almost zero.
Also AJ mentioned prostatitis. Your symptoms (with the negative tests) sound more like that. I also suffer from this and it does cause penile discharge during bowel movements.
My answer is similar to that of AJ.
In your post you said your symptoms started 10-11 weeks after the last encounter and then you got tested? This is loads of time so its safe to say the tests you did were conclusive so the already slim risks are now reduced to almost zero.
Also AJ mentioned prostatitis. Your symptoms (with the negative tests) sound more like that. I also suffer from this and it does cause penile discharge during bowel movements.
Has your partner seen her doctor? She could just have a yeast infection or bacterial vaginosis.
Amox wouldn't cure any STDs, and even if it did, and you'd infected your partner, she would have re-infected you. You could just go test now and find out, and put it to rest.
That said, any risk for such a brief time is minimal. Really, just go test. Go to Planned Parenthood or an STD clinic, self pay, and get tested so you can let it go.
Remember that guilt doesn't equal risk. Get counseling if you have to so you can let this go. Tell your partner to go to the doctor because you're concerned for her health and letting things go untreated can cause serious complications (this is true) and find out that she has yeast, BV, dermatitis or something, and let this go.