Testicles are swollen.

Bingo was hit from behind by a car mon nite. He got several cuts on 1 side of face, nostral bleed on that side, not move back legs at all, several cuts on 1 back leg, bleeding from rectum. Cleaned & bandaged his face & leg, rectal bleeding stopped shortly after he pooed, and lil blood dripping from nostral when left him 4 nite. N morn, nostral bleed was still dripping a bit & rectum was dripping blood again, but he was n 2 much pain 2 move him, so vet came out that day. no xray, but was told he had definate spinal trauma, possible nerve damage, looked like only a tear inside rectum, and did have feeling n back legs (said if he was 2 regain use of back legs could b 3 weeks to 3 months). gave him 10 days of cephalexin & tramadol 4 pain. nose bleed stopped by that eve, rectal bleed oozing off & on still (gets worse when he tries to move around or poo) but is not alot of blood at all. Is taking meds 2X day, eatin canned food, drinkin water, peein couple times a day, but not much pooin (full load mon nite rite after accident, little bit thurs afternoon, lil bit of oozy mess friday, and a few little bloody chunks this (sat) afternoon). He can sit alittle using his front legs, but hasn't even attempted to move lower part of his body (FYI, he is tailless). His testicals & back leg w/cuts r very swollen 4 last 2 days only, & he didn't eat as much 2day (prob cause he's not pooing much & feels full). ABOUT THE SWELLING, SHOULD I B CONCERNED OR WAIT IT OUT? could it b a side effect of meds? or more like a bruise due 2 the hit & will subside on own, add ice & rest, type thing? or does it sound more like an internal bleed or something along those lines?

Ok. yeah, that makes since now why the vet checked his gums a couple times while she was out. I just checked them and they don't seem to be pale to me, they look the same as always. the vet said she was pretty sure there were no fractures cause they cause alot of swelling & he didnt have that when she was out almost 15 hours after the accident (she had me give him asprin 4 pain a few hours b4 she was able to come out). the leg that has swelling is his left back. the first couple days after the accident we had him laying on his right side, so we could get to the hurt leg better. on wed eve & thurs he kept tring to get up, so we placed him on his left side figuring he needed to move a bit, & that seemed to help his restlessness. the next day i noticed his left leg (now under his right) & testicals were begginning to swell. by sat (yesterday), they were obviously swollen, so we put him onto his left side again, hoping to relieve some pressure, but by eve there was still no change. this morn however, the swelling in his leg has gone down alot, almost back to normal, but there is not much change in his testicals, the swelling has gone down a little though. my husband would really rather not spend anymore than we already have - the house call 4 our area was not very cheap.