If your left-sided pain is due to Pelvic Inflammatory Disease (PID), it requires prompt medical evaluation rather than self-treatment. PID is typically treated with a combination of prescription broad-spectrum antibiotics. A common regimen includes a single intramuscular injection of ceftriaxone, followed by oral doxycycline and sometimes metronidazole. However, left-sided pain can also stem from other manageable issues like ovarian cysts or bowel irritation. Please do not panic, but do visit a healthcare provider. They will perform a physical exam to confirm the diagnosis, prescribe the correct antibiotic course, and advise if your partner also needs treatment to prevent reinfection.