I lost mine around then with my first it was like a large lump of clear/pinky discharge kind of a little bit hard with a little bit of blood that's all I can remember but tell your doctor/midwife next time you see them just so they can keep an eye on you x
Well it could have just been discharge only. It's common to have increase of discharge in the 3rd trimester. The mucus plug comes out enough that you can see it in the toilet but it regenerates so you can lose it Lil by Lil or multiple times.
It could come out all at once or bits by bits. Mine all came out in huge blobs of blood, snot like stuff three times in the same day. But i was in labor already. But you can lose it early on and it grow back , so you shouldnt worry :)