Long post #pls Pls help

Hello all..; I had normal delivery last week on, 30nov being induced on 29night.. Exact 24hrs of labour pain..; Took epidural also.. But after fully dilation, baby's head got stucked with his hand so Dr used vacuum.. (coz pushing time was also so much long)..

But after delivery I was not able to urinate naturally.. I was having urge to urinate but failed to pass it on.. Thus they inserted catheter to remove urine from bladder.. After that it continued in & out n after dat I was on catheter for 3days..

After dat wen they removed catheter; I went to pass urine on my own but I hardly succeed in removing 25_50_80and sumtime 200ml of urine naturally but the urge was not going only.. Thus they again inserted; catheter and did in and out and the urine retention; was too much in bladder..

Dey did one whole day in and out of catheter after I was going to urinate just to check how much retention; is der inside..

Finally on 8day of delivery I took discharge; but with catheter; n urine bag in hand.. Now Dr telling; to visit after 8days to check the recovery..

Pls suggest; why all dis with me.. Wat is the real cause behind dis.. N was the solution now.. Feeling scared n shaken up from this event.. Pls guide Dr