MY DR RMOVED 30CC OF BLOOD FROM MY INJURED KNEE AND MY CALF IS BURNING TO ,, ITS ALL vERY PAINFULL

I FELL LATE FRIDAY  EXTREME PAIN  TO ME ALMOST OR AS BAD AS A LEG BREAK  2 YEARS AGO,, WENT TO THE ER XRAYS WERE OK GIVIN A BRACE CRUTCHES AND 10/5 LORTAB,,  WENT TO A SPECIALIST ON TUESDAY HE ROMOVED 30 CC OF BLOOD  FROM THE TOP OF MY KNEEHE SAID 2 CC WOILD HAVE BEEN NORMAL  HAVING A C SCAN? FRIDAY  THE BACK SIDE OF MY KNEE FEELS LIKE JELLY VERY SWOLLEN  MY CALF ALSO IS HURTING , THE DR SAID THIS WAS  NOT LOOKING GOOD  I WORRY HOW BAD THIS COULD GET??  IM 45  5'9 155 LBS PERFECT SHAPE EXCEPT I BROKE MY TIBULA IN 3 PLACES AND THE FIBULA ONCE IT TOOK A YEAR TO HEAL IT ALSO HAS A CADAVER BONE IN THERE  SAME LEG