Im on ortha tri cyclene im on my seconday of inactive pills i notice liast nite when i wipe i saw blood and a piece of blood clot but when i woke up nothing could this be my period is on the way?

Probably OK: Occasional irregular bleeding with birth control pills is generally not worrisome. If the problem continues a gyn provider should be consulted.

Breakthrough bleed: Sounds like breakthrough bleeding which occurs when you have bleeding at unscheduled times while on the pill. Brown is simply old blood that has been sitting at the back of the vagina. Often things get back to normal the next cycle. If not then schedule a visit to discuss changing brands or changing birth control methods. This is very common. Other than being annoying it is not dangerous.