Hi,
Thanks for the query.

-Yes, some amount of irregularity in menstrual cycle can be seen during breast feeding due to hormonal imbalance.
Better to follow some contraceptive measure during this period.
-Leaking of amniotic fluid can occur due to premature rupture of membranes. That can occur due to infection, strenuous activity, excessive amniotic fluid etc.
-Usually diaper may not have side effects, if used properly and changed frequently.
-Better to use diaper only. Avoid continuous using, give some gap in between.
-Yes, you can make him to sleep with you. But keep additional cloth or small separate bed on your bed for him.
-Yes you can massage with baby oil. The procedure of massage will come with the pack.
-You can use any of the available brands in market, like Johnson's etc.
-Yes, if the consistency is normal no need to worry. Increase milk intake to reduce constipation.
-Yes, you can clean with your finger. Just wash your finger and gently massage the gums and clean tongue. Don't pour water in his mouth.
-No, only breast milk should be given.

Hope I have answered your query. I will be available to answer your follow up queries. If you are satisfied with all my answer, please rate the answer after closing the discussion.
Take care.

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