What Causes Severe And Recurring Pelvic Pain?

2 years ago I took a private test to find out the underlying cause of my recurring pelvic pain. The results were positive for mycoplasma genitalium. Since then I have been given doxycycline which initially took the symptoms away, only for them to return. I now find doxycycline is not effective. I have read there are particular strains of mycoplasma that are resistant to certain antibiotics. some treatments that seem to be effective are moxyfloxacine or sitafloxacine. I have not been offered these antibiotics. my doctor is suggesting laparoscopy as the next step after my ultrasound and blood tests came back fine. Unfortunately in the UK, the NHS does not recognise mycoplasma infections. what I am wondering is, am I better pushing for a different antibiotic treatment I.e. moxyfloxacine, before undergoing invasive laparoscopy. I truly feel my pelvic pain is infection based, but I think my doctors suspect endometriosis.