Hello,
Welcome to ehealthforum and thanks for writing
Switching off from one pill to other causes disturbances in the hormonal levels and it might present as irregular bleeding,spotting,nausea,vomitting,headach
es,fatigue,mood swings etc for few weeks until the body gets adjusted to the hormonal changes.It seems you are also experiencing these effects due to change of the pill.
You have also not been regular in taking the pills which can cause these symptoms.Relax yourself and take the pills at the same time daily as the contraceptive effect is more if the pills are taken regularly.Avoid unprotected sexual contact at least for a week after using the pills and use protection during sexual contact as pregnancy chances are possible.
Take care!