Thanks for writing to HCM
Some women have irregular periods
, it may be due to it.You didn't mentioned about periodicity. since you have taken the pills in right time, chances of pregnancy
is negligible. If have doubt,you can repeat urine pregnancy test after 4-5 days. sometimes UPT is false negative due to low HCG
For confirmation you can go for Ultrasound
Your symptoms may be due to psychological reasons.