On May 27th I've had unprotected sex and I've raced to acquire a morning after pill. I took it within the first 12 hours (levonorgestrel based). On 3rd June I started to bleed, it was stronger than just spotting and I passed some clots. It stopped on 6th. Since then, I've not had my period. I had two quantitative pregnancy blood tests done on 25th June and 10th July respectively, both came back as negative (<2 mlU/ml HCG). I'm usually quite irregular with my periods, even without any kind of hormone-based medication, but this is still nervewracking. My last period ended on 21th May but I can't quite recall the exact starting day.
Would the blood tests be completely reliable at that point? Am I in the clear as far as pregnancy is concerned? Does it ever happen for the EC to cause two missed periods in a row, or am I some great anomaly? I'm worried sick here, but I cannot afford churning money on continuous pregnancy tests.