Hi guys, I'm Amanda (31) & this is my second cycle ttc 
Apologies in advance for the wall of text, but I just need some help/advice! 
So, I'm a bit confused with my cycle atm. I've been tracking my period for years and my app is pretty spot on with my cycles. I have on average a 31 day cycle (last cycle was 29 days). According to my app this month it says I should be ovulating CD18 (26/01/22), however I noticed on CD6 (2 days post period) my CM was getting to the egg white stage already and I was feeling a little crampy. So I started OPK testing & BD'ing and I had a positive (or v. high) opk on CD12. I expected the line to be darker the following morning because I wasn't convinced it was my peak, but instead my tests since then have all been getting lighter.
On CD14 I was getting sore boobs, nausea, cramping, feeling very emotional and generally didn't feel great at all. And all day today (CD16) I've had strong cramping, sharp pains in my left ovary and fatigue. My CM is minimal but sticky & clear and I have no idea what's happening with my body 
My cramps are similar to my PMS/ovulation cramps, but AF is 16 days away yet.
Has anything similar happened with anyone else? Any insight/advice would be greatly appreciated because I'm so confused 