welcome to healthcare magic
The severe burning sensation & pain during urine is suggestive of infection ;but usually frank blood is not seen in infection easily .This blood can come from a impacted small calculus(stone) in urinary tract
.Or there might be some internal problem at junction of the urethra
.You need to get investigated X-ray KUB;ultrasonography
of KUB & Pelvis.But better consult a Urosurgeon ;he will be the best person to help you & solve your problem.
wishing you good health