Any ideas!

Three days until AF is suppose to show so I’m 11dpo! Sore breasts which is usually normal but never this long or as sore as I have been, on and off nausea and some acne on my face which isn’t normal for me at all. Just went to the bathroom and had slightly yellow creamy sticky CM. Am I out?? I tried a cheap test and it’s negative but didn’t get a positive with my last until 17dpo. Just exhausted with this whole process!!