I Used To Be Irregular Then My Period Starting Coming

I used to be irregular then my period starting coming the same day, a day early or a day late for the past five months now, which was really nice. I haven't been stressed out, my diet has been the same for years now, I am at a normal weight for my height and age. I did though, catch what was similar to the flu for a few days the beginning of this month (March). What is confusing is I've never gone so long without a period..It has been officially 55 days since the first day of my last period, and still no sign of period. As I remember, during the middle of Feb. when I wiped after urinating, I noticed a small amount of blood on the toilet tissue. I decided to wipe again and there wasn't any blood, but I did notice pink tint on cm that came and went for three days only when I'd wipe. I decided to take a couple of at home pregnancy test; within 5 minutes of taking them, I saw what seemed to be an extremely faint second line, but it was too light to make me believe it was something. Since, I just haven't taken any HPT. I don't know what to think of all of this. Lately I've noticed how easily drained I am. Also I haven't had an appetite as I normally would. Hopefully someone can give me a little bit of help on understanding what might possibly be happening.