<s>[INST] i think i missed 3 cerezette pills over xhristmas, the days on pack were not matching up so i took the 3 right away that morning i realised i may have missed then and then got back on track after that. the morning i thought i missed them my partner and i had sex... i took a preg test but so far negative how long to wait to take another one? my period is not regular on my pills at all... shall we use a condom even tho i am back on track with the pills? [/INST] Hello, Cerazette is a progesterone only pill. It is common to have an irregular period on this. The protection continues as long as one takes the forgotten pill within twelve hours of forgetting it. The chances of falling pregnant increase if there is a delay of more than twelve hours from when it was due to be taken. Up to two tablets can be taken together if one misses on one day. However, missing 3 tablets puts one at risk of becoming pregnant. It is recommended that one uses emergency birth control measures in such a situation. You could repeat the pregnancy test two weeks after the test that you have taken and tested negative. Or else do a blood test to check for pregnancy hormone level, if you are really worried. Emergency contraception is the other course of action if you realize you have had unprotected intercourse. It could give you 95-99% protection of pregnancy if taken with 72 hours of unprotected sex. Hope I have answered your query. Let me know if I can assist you further. Regard,  </s>