I came off the pill on September 17th. I’ve had 2 periods since then and they both came within 28 days. I am due my third period now but it is now 6 days late and I’m concerned. I have been having sex but always with a condom. I took 2 tests, one after 3 days late and one after 5 days late and they were both negative. I have been having cramps the last few days but still no sign of anything. Should I be worried?