You should always seek medical attention immediately after an accident, especially when someone else caused the accident.
Bumps and bruises sometimes indicate severe or life-threatening injuries. A taxi accident creates emotional and physical trauma like any other car accident. The excitement and adrenaline rush from an accident sometimes masks pain, so victims do not feel immediate symptoms.
A simple bump on the head or a minor headache sometimes indicates a serious brain injury. Bruising and soreness in the belly sometimes indicate internal bleeding and or internal organ damage, which can be fatal if left untreated.
Additionally, some types of injuries do not immediately show symptoms for hours or days after an accident. You might have suffered a serious injury, although you cannot feel it. For your own health and safety, its best to let a doctor examine you for common traffic accident injuries and provide treatments and restrictions.
Also, you need medical documentation of your injuries for the best chances of recovering the maximum amount of compensation for your injuries. Your medical record serves as evidence that the taxi accident caused your injuries, making it difficult for the other side to deny the claim.