Not sure how to go about applying Lidocaine Cream

So I bought two different lidocaine creams today. Both have 4% lidocaine as the active ingredient but two different brands... one is blue emu and says it contains emu oil and the other is aspercreme which claims to be odor free. 

I’m new to this (day 5 of first OB) so I got both because I couldn’t find a quick answer as to if there was a specific brand I should get. Blue Emu was the first to pop up on google search....anyways they’re probably both the same??

Just lookin for some advice on application. Should I apply it all over my pubis mound only or can I get closer to my inner thighs and labia? I understand it is for external use and do no plan to get close enough that it will enter my vagina. 

Also is it safe to use inside my b**tcr*ck?? Sorry I know that’s gross but I’m really curious simply because I don’t want to harm myself by accidentally allowing it to find it’s way internally. 

Im still exerpiencing tingles on my buttocks, should it be placed there as well?

Lastly, if I’m experiencing discharge should I avoid the cream at night when I am sans underwear?

Ok and lastly lastly, will peeing affect the cream? I just really don’t want it to get where it isn’t supposed to be lol

Hope I get some help, thanks in advanced!!