I had intercouse on Dec. 26 2016. That was the last day of my period. My app says that I m on a 28 day cycle. I was supposed to start my period on the 20th of this month. I have not started yet. I am irregular but I hardly miss many periods. I m 22 but when I was a teenager I was diagnosed with PCOS. I have not been experiencing those symptoms for years, so I figured I don t have that anymore. Well, I ve already taken plenty of pregnancy test. Some were too early, some a few days before my period was supposed to start and after I had missed a day or two. I have been experiencing symptoms and my body feels different. Breast tenderness, nipples slightly darker, I can see a blue vein, constipation, diherrea, headaches, backaches, stomach churning, and feeling a little sick but not throwing up, my clothes are getting a little snug, feeling a little more tired than usual, waking up too early to go potty, eating a little more, wanting milkshakes, I have been spotting between very light pink-red but not as much as I do with a regular period. It s usually heavier and darker in color. This spotting/bleeding has been happening for a few days now off and on. I have a feeling that I might actually be pregnant but these test are throwing me off. I m still spotting and took a test this morning and it was negative.