always. Especially if it's more towards the beginning of your period. Use protection, but if you don't want to wait til you're sure your period has just passed. Just always use protection basically.
Nope none at all. Do however note that you are more prone to infections etc. during your period, so always make sure that you do use a condom (even if you are on the pill) during that time.
Nope... as long as you are using protection for birth control, (the pill or similar) combined with protection from STD's (condoms) you have it covered.
yes use protection protection... safety comes first
No - it can even help with cramping!
No...just put something down.