Help! So confused

Allie
My SO and I have been TTC since January this year. Had problems because I'm an irregular ovulator so for the first three months no period at all. Got put on progesterone to get my cycle twice. Finally got it on my own over a month ago. Today is cycle day 40, normally I would think maybe it's my body being off again. Well a few days ago I got this intense crazy cramping feeling that hurt so much it hurt my back and I thought ok this is it, this is my period finally, but nope still nothing. Tonight I got home from work and wanted to relax completely and well I ended up feeling weird down there like too moist so I check with my fingers thinking again maybe it's my period but when I pull my fingers to the look it's a HUGE GLOP of white creamy mucus. I don't know what this means :( and I'm scared to get my hopes up.