Are these normal reactions to nicotine withdraws?

I quit smoking about a week ago, and along with the normal reactions (head pain, nausea, intense cravings) I've been having other strange tendencies. First of all I've had a strong craving and sensitivity to caffeine, to the point I need to have coffee throughout my day to get along. Also I've noticed that my sex drive has gone WAY up. While I haven't got any complaints from my boyfriend, I'm wondering if it's connected. And also ever since I quit I've had urges (and have acted on them) to do reckless/spontaneous/random things! Let's just say such things include kissing other women (I'm not a lesbian) and insiting on having sex while his parents are in the other room. I've been doing random little things alot lately for no apparent reason. Though ive always been a little wild...not to this degree. Does this have anything to do with my lack of nicotine? Will this go away, or get worse??