Was treated for bacterial vaginosis with antibiotics, since then had issues with itchy vagina but not isn't thrush as had swabs. sex is sometimes painful not always.had swabs and all clear. any help?

Yeast infection (thrush) is commonly triggered by antibiotics, and can be difficult to diagnose. The value of a "swab" depends on exactly what test was done on the swab specimen. Ask your doctor about a possible trial of an anti-yeast medication, such as single dose oral fluconazole, or a vaginal "azole" product. It seems worth a try and not likely to be harmful in any way. Good luck.