Sperm Question? Tmi, obviously.

So, my wife and I are ttc using a known donor, and the syringe method. We're only on our 4th cycle, but I noticed something about our donors sperm the other day. Most of it looked normal, but there were also clumps in it. Almost jelly like.. or drying rubber cement. He's disease free, we know that for certain. Is this normal? Have any of you ladies ever noticed this?