Multiple annoyances...

There are several problems for which I would like someone to recommend one remedy that would hopefully help all.
(Female, 32, slim, tall, brown hair, sedentary job, but likes walking.)

1. Itch in genital area. I've been struggling with this for nearly a year. Last I tried Sepia 30 C, which helped somewhat with the itch, but also drove me to the edge mentally. Had a bad aggravation. After I stopped Sepia, the itch came back.
The itch is around the anus, the perennium and the vagina extending to the upper inner thighs. Worse after shower and at night. There are a few small red boils in the 'hairy' area of the genitals, sometimes filled with a bit of puss. Kind of like acne pimples, but they seem to be making the itching worse.

2. Wearing a bra causes pain. I have a strong aversion to bras! The materials they are made of, the metalic parts... simply the whole thing is like a vice! When I have to wear one I get pain around the ribcage where the elastic is and also a dull cramping sensation in the whole upper abdominal area. It's a pressure type of sensation, or as if some sort of circuation was being cut off.
As soon as I take the bra off, I feel freed and the cramps and pain go away.
Please help, as especially in the summer, wearing a bra is essential! Even when I wear a very soft type of bra-top this happens. Basically anything with an elastic that's causing pressure either around the chest or the abdomen causes pain and discomfort!
I've had this problem for about 7 years and very rarely wear a bra...

3.When my boyfriend makes sexual advances or even just talks about wanting sex this causes a problem. He often suggests it at times when I cant - as in being on my period, being somewhere public, or I'm in the middle of something. He talks about it, b/c he likes to 'look forward to it'. However I don't like to talk about it, or being 'playful' until we'll actually do it, b/c the persistent thought and not being able to act it out is very bothersome!
I often actually feel some excitement around the vagina with the persistent thought and I'm not able to shake it off for hours! I am not able to concentrate on anything else, so this makes me angry and very nervous! I feel like it's torture.
Basically, he is way too sexual and he's overwhealming for me.
I do not want to feel more horny, I just want to be able to say 'NO' or 'not now, later' and not have these persistent thoughts of sex haunt me for hours even after I said no!
This is becoming very annoying!
Please, please advise a remedy!
Thanks