I had sex three times during my fertile week and my period was due two days ago. Yesterday I had went pee and when I wiped there was blood on the toilet paper so I put a tampon in. Hours later I took it out and there was almost nothing besides a small drop old blood. Since it was so little I didn’t bother putting another in and it’s now been a day without anything. My discharge is clear, nothing when I wipe, I don’t know if my period is just taking a slow start or if I should go buy a test? Usually my period is fairly heavy in the start so regardless this is out of the ordinary.