The chances of contracting HIV from a single condom break is extremely low when the partner's status is unknown, even with a CSW. And the odds are very strong your CSW was negative.
Most physicians would not even have qualified you for PEP based on this exposure. The medications you were prescribed are very powerful and have serious toxicity/side effects associated with them.
I hope the physician fully explained the risks of these medications to you. If you develop any 'symptoms' it will most likely be due to these medications, not HIV.