Based on your symptoms, this appears more consistent with patellofemoral pain syndrome (PFPS) or patellar maltracking/lateral patellar instability, although other conditions such as a meniscal injury, IT band syndrome, or ligament laxity cannot be ruled out without a physical examination.
The inward collapse of the knee during weight-bearing (dynamic valgus), increased kneecap mobility, clicking sounds (crepitus), and relief with stretching suggest a possible muscle imbalance involving the quadriceps (especially VMO), hip abductors/external rotators, and surrounding soft tissues.
Since your symptoms have persisted for about a month and are affecting knee mechanics, you should undergo a detailed clinical evaluation.
Next Steps
Consult a Physiotherapist first for a comprehensive biomechanical assessment, gait analysis, patellar tracking evaluation, and muscle strength testing.
If there is significant swelling, locking, repeated giving way, or suspicion of structural injury, consult an Orthopaedic Surgeon, who may recommend X-rays or an MRI if indicated.
Until evaluated:
Avoid running, jumping, and deep squats.
Continue only pain-free stretching.
Begin supervised strengthening of the quadriceps (especially VMO), gluteus medius, and hip external rotators.
Ice the knee for 15–20 minutes after activity if sore.
Health Tips
Seek urgent medical attention if you develop severe swelling, inability to bear weight, true locking of the knee, recurrent dislocation of the kneecap, fever, or significant instability. Early physiotherapy often provides excellent outcomes for patellofemoral disorders and may prevent the condition from becoming chronic.