Hello, The compromised immune status during pregnancy predisposes to increased infections. You should also test for the possibility of gestational diabetes and iron and protein deficiency since these are the other conditions that predispose to increased infections. Oral treatment can be given if needed absolutely since you have long passed the organogenesis stage. If you are sexually active, your partner also should be treated after proper examination. Abstinence should be followed until after your delivery since you are in the third trimester. The lump needs to be examined to give a decision as to what it is. It can be a clump of the flakes discharged from the vagina. Please maintain proper genital hygiene. Hope this helps.