Answers welcomed

I wiped myself after using the bathroom and a creamy very light pink discharge was on the napkin. I wiped again and nothing was there. I've been having slight cramps but no period. I'm three days late. I've also been feeling nauseous, fatigue, emotional (weepy), lack of appetite.. I don't want to get to excited so I don't want to take a pregnancy test till this weekend. I took on last Wednesday and it said negative. Could I be pregnant? (I really want to be).