Hello. Welcome to ask the doctor.
I understand your concern.
If condom was burst while doing activity with an infected person then there are high chances of spread.
If the partner is having active disease then the chances increase multifolds.
You may take prophylactic acyclovir or if developed symptoms already can start it as treatment option.
Discuss this with your doctor before acting upon my advice.
I hope it helps.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.