CD30 and I just got this in an OPK. What???!!!

Lorna
No idea what's going on. Have a vfl yest so took a FR this morning with FMU and got a negative. Thought I'd take a OPK just to see if I could work out what's going on and now I'm more confused than before. I know I ovulated earlier in the month but I have no EWCM or discomfort that I would other wise associate with ovulation.