hi,
thank you for providing the brief history of you.
As you mentioned you faced an accident and after which you are having a pain in the hip. As reading your history, i can understand that you were hit from behind and then you had a fall. Now to understand this mechanism, you need to understand some physics here. As when you are hit from behind, your body is not prepared to take the force applied on it. Also, due to the hit from the back, the body has gone into extension in the spine level and later on fallen down. So there might be chances of
soft tissue injury which needs an assessment. Also, an
MRI of the
lumbar spine is advised. I agree to you, that most RTA will have
back pain, and all are not serious, but without examining deciding on a general terms is a baseless understanding. Taking
self medication is also not advised, as if the injury is big you may be trying to reduce the pain but the other factors of the soft tissue injury will be present and may get worsen as well. I will advice to get your spine assessed, as spine is an important segment in the human body and needs a real attention. also to understand that, due to any injury now, the later disadvantages are present. Afterall its totally your call and you can decide better.
Regards
Jay Indravadan Patel