Your risk is very low.
You used a condom initially. When it broke, you stopped and immediately used a new condom. That significantly reduces risk.
Also, your partner tested
HIV negative at 54 days, which is a good sign.
So overall, the chance of HIV from this exposure is very minimal.
For complete peace of mind, you can do a 4th generation HIV test at 3 months after exposure.
Based on your symptoms, this may require proper clinical assessment and prescription. You may book an online consultation with me for detailed evaluation and personalised treatment plan.