Flu symptoms and mild cramps 6 dpo?

Ever since ovulation I've had white thick cm and at one point it was yellow.(never had yellow cm in my life) It's now turned to milky lotion type cm. Since 4dpo I have had flu symptoms, no runny nose or anything just the fatigue and nausea. The feeling where you think you need to be sick but you don't. Twice I've woke up in the morning and had to run to the bathroom because I thought I was going to be sick. It almost feels like a hangover. Also I have mild cramps accompanied by some twinges and tiny pinching pains. And just now some very small stabbing pains just below my belly button. Could this be symptoms?