Your
beta hCG came back under 0.1, and your three home tests were all negative. Pregnancy isn't the cause here. The i-pill you took on day 8 of your cycle can delay your period by days or even weeks. Ongoing stress and the weight gain you mentioned can add to that delay.
Next Steps
Periods often return within 2 to 3 weeks of taking an emergency pill, so give it another week or so before worries set in. Keeping a steady sleep routine and gentle activity can help your cycle settle.
Health Tips
If your period hasn't started in another 2 to 3 weeks, or you notice heavy bleeding or pain, please see a gynaecologist to check your cycle.