Hormonal treatments and Herceptin

I am now on Tamoxifen for 5 years (tried and tested hormonal drug been around for 30 years) and the relatively new wonderdrug Herceptin indefinately due to the mets on my lungs.

Tamoxifen
So having had chemo which pushed me into early menopause the tamoxifen will make sure I'm in menopause, so going through moderately severe hot flushes, aches and pains, weight gain espcially round the middle, I have changed my diet to a green juicing diet ala Kris Carr of Crazy Sexy Cancer website and blog with books to accompany, this sort of helps with the weight gain and surprisingly is not as bad as I first thought it would be, have been recommended to take a low dose anti depressant to help with the hot flushes and the mood swings got to try fig leaf tea first but if that does not work then its back to the Dr's to get me some anti-d's.

Here's a list of the anti-d's that might help:
Citalopram (Onc. and GP not sure this would help or that it might interfere with tamoxifen)
Amytriptiline
Clonidine
Venlafaxine (This one is most effective according to my GP and Onc. and does not affect tamoxifen) (brand name: Effexor or Efexor)
Mirtazepine

So to update tried Venlafaxine took only 1 tablet and turned into a freaked out, depressed nightmare, also gave me extreme nausea and a migraine so back to the drawing board in my quest to find something to counteract the hot flushes but no more anti-d's for me.

Its been nearly 2 years since I started this cancer journey and since I started taking Tamoxifen, I'm going to be honest with you I've put on weight quite a lot for me nearly 2 and a half stone considering that I spent my whole life (42 years) a size 8-10 and never put on any weight this has been probably the most upsetting and depressing side effect, I'm not a vain person and I never really bothered with make up and diets just got on with my life until this shit happened to me, the weight gain is starting to get to me so I've recently started taking Raspberry Ketones in a bid to try and lose some of this weight. Considering that I don't eat very much anyway I'm not holding out much hope for it to work but I've got to try something, it may sound like a very trivial thing compared to what I've been through with all the chemo and surgery BUT its really affecting me I've started questioning why I've bothered surviving to feel so utterly shit and pointless. As a result of the dramatic weight gain I've had to take all of my clothes to the charity shop and buy new (charity shop buys) big girl clothes baggy and unflattering which kind of makes me feel even more like an alien in my own skin because I look in the mirror and see someone that I really don't know, its just not me. Another crappy side effect of the weight gain is that my spacial  awareness is affected because for the first time since I was a kid I started falling over and really hurting myself, I've grazed my knee and ankle really badly. What really did it was I was out walking with my lovely friend Sandy who is 70 and I fell over and she had too help me up!, its just crazy, embarrassing and highly frustrating. End of rant.

Herceptin
Have been on this wonder drug now for two year's now and have it by IV every 3 weeks, sometimes I get a bit out of breath and I have a runny nose like water dripping from a tap, on occasion I get heart palpitations, migraines, slow hair growth not sure whether weight gain is also part of the side effects.