Chalky thick CM after ovulation/sex

It's been a week since my fertile period and obv high sexual activity. I have had thick chalky / pasty cm for the past few days and today woke up with puffy lightly sore breasts. 
Going to wait another week or two before taking a pregnancy test as I'm due for my cycle early next week / this weekend. Just wondering if I had a reason to be optimistic. Know there's no sure things, I suppose I thought the breast tenderness was an  indication that I wasn't pregnant and was going to get my period. 
Thank