Using I-pill with protected sex is very much effective (upto 99%) and chance of being pregnant is quite low.
Though, it should be confirmed by one blood test
for beta-HCG as early home pregnancy
test is less significant sometimes.
I think that she got withdrawal bleeding (similar to period) in Jan. Upcoming cycle may be delayed due to effect of the pill associated with hormonal
imbalance. 7-10 days delay is common thing.
Even after 10 days, if she does not get her period, then she may need to undergo some investigation like USG pelvis, hormonal assay etc after consultation with gynecologist.
, take healthy diet with iron supplements
, eat more vegetables/fruits and drink more water, control body wt and take proper sleep.