So, I am not on hormonal birth control. I keep track of my fertile days and ovulation schedule. My SO has had a decreased sex drive for 2 years, not sure if that's relevent. Last month, we had sex on one of my fertiles days, a couple days before ovulation. I had a period after that on time, normal. My cycle has been 21 days long for over a year. I was suppose to start last Thursday. Yesterday, I had some spotting..so, 5 days late. The first day of my period is usually very light so thought nothing of it. But, then today was very light this morning, too. Then by mid-day...nothing, clear discharge. Then, this evening very light spotting. My neighbor and I have been hanging out a lot and our cycles have gradually been changing to mimic each other's. Her period started yesterday, normally. Could this be pregnancy, even though I had a period last month after having sex and have spotted this week? Could it just be my cycle changing? Grrr....I'm fairly neutral to being prego or not. Just curious. I don't have extra money to spend on a test, if it's not necessary.