Thanks for your query.
Noted the history of fall, sore lump that hurts on laying down.
Yes, it is better to go to the Hospital to get a clinical evaluation by a Doctor, physical examinations and investigations if felt necessary by your Doctor.
This is always a safe practice to get examined by a Doctor to rule out any sinister but yet hidden problem, that only a Doctor can find out.
I hope this answers your query with a proper reasoning.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.