1. Do a Urine Pregnancy
test - if negative nothing to worry, you can continue the same pill regularly
2. Spotting may be due to estrogen deficiency
in second half of cycle
3. If during the next cycle the problem persists, then it is advisable to take medications containing ETHINYL ESTRADIOL/DROSPIRENONE
for 21 days regularly thereafter.
4. Generally even if you miss a single day of tablet (all oral contraceptives) in between the course of 21 days, you are prone to get spotting per vagina.