Am I ovulating when I should be on my period???

Lo
I'm 4 days late on my period. No cramps or anything. But I've had a clear slimy egg white discharge for the past 5 days now?? I'm pretty aware of my body and I'm pretty sure I already had signs of ovulation earlier in the month. This is now the second time I'm having this discharge except it's a lot more than normal. 
I took a pregnancy test yesterday and this morning and they were both negative. Any advice?