Hello...  Your sexual partner should have STD then  ..your symtoms suggestive of trichomoniasis.. Trichomoniasis is considered the most common curable sexually  transmitted  disease....Infection is more common in women than in men...  Laboratory tests  are required  to diagnose   trichomoniasis ,Trichomoniasis can be cured with a single dose of prescription antibiotic medication.consult gynaecologist..

Hello there. I can understand your concern. It could be a fungal/yeast infections. I would suggest you get it checked out by a gynecologist in person for further evaluation and management. She will be able to tell you what it is and what's the reason of your delayed periods. Best regards. Dr. Anil Kumar Jain. Bangalore.