just a little advice ?

My 7 week old likes to feed for little amounts of time, it's been around 7-8 minutes then he's done.. normal?

2nd thing... 

7 weeks pp and I have NO sex drive and I feel so bad for My bf.. he also thinks I have no interest in him and idk what to do.  

3... I've been having this rash that looks like hives almost when I itch it.. on my inner thighs and boobs. After itching it then bruises so bad. I did some research and it says cancer 😳 please tell me that's not what it is 😢 

4... does this tiring phase pass??? Cause I get no sleep at all these days.. and I literally can't even function properly to leave the house.