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You may be having a Recurrence of Infection, since you have not completed the full course of medications or i hope you have not started it at all. Kindly get a second opinion
from another Gynecologist and if Possible start the medications as directed by your Doctor. Do no wait until she comes back from the vacation. The bleeding or discharge is not related to your Exercise schedule or severity. It depends on the severity of the cause. You may want to get a Swab taken from your Endocervix and send it for culture to know the causative Organism. If confirmed you may want to take antibiotics either IV or Orally for 7 to 14 days. If Untreated, the complications include, Disseminated infection, which can be very serious, Long-term joint pain, Heart valve infection
Take your Medications regularly and go for regular follow up. Always use a condom, if you are not Planning for Kids.
Wish you Good Health, Take Care.