BBT chart looks crazy!

This is my first month charting and it looks horrible! I got a positive opk on cd 18. EWCM has been around for a few days now. Yesterday my Cm was creamy so I thought I O'd. Today it is lotion/EWCM. I am so confused! My cycles have been 29 days these past few month but in the past it could be as long as 31/32 days long. I added my bbt chart. I am now on cd 20. I just took another opk this am for the heck if it and it is positive again!! What's going on with me!? I am about to go crazy LOL!