confused about mycoplasma huminis and ureaplasma urealyticum

[idontknow19]

hello everyone, I hope I am posting in the right place
I have been sexually active for 2 and a half years, and only had 2 partners. I am now with my boyfriend for two years.
I was in Germany for one month and a half, and when I came back we had unprotected sex 2 days in a row.
That week I started to have some abdominal pain when I peed. It felt like my left side was being crushed. A few days after that, when I went to pee, the whole area, both left and right side hurt, and the pain kept being there for another 10-15 minutes.
Anyway, I went and got tests done, I have someone who works in a lab and I got all the tests done, and I was diagnosed with mycoplasma huminis and ureaplasma urealyticum infections, having to take doxicilin, suppositories and ovules(?) (sorry, English is not my first language).
Now my dilemma is this:
I have been told it is an STD. How can it be an STD when I was my boyfriend's first and we've been together for 2 years without any kind of these problems and have had unprotected sex before? What are the causes of this?
I'm really confused and don't know what to think.

[Life360_Dave]

They are only treated if get out of control. Thats when they spread to the upper areas.

[idontknow19]

and also how do you explain nothing happening in the 2 years until now?

[idontknow19]

then what can it be? with the abdominal pain and stuff? when we began the tests the first thing she said she saw was that I had a lot of leucocites. that was before the in depth tests

[Life360_Dave]

Hi, the doctor is mistaken. these are normal bacterias present in women but it can be passed to the man so it might be advised to have him tested and treated as well to avoid it being passed back and forth