120/100 is a really odd number. I would have you bp checked again and make sure they are doing it manually with a proper sized cuff. (if you have to don't be shy to ask for a larger cuff)
things that can help high bp:
eat a cucumber a day
take baths with epsom salts
take calcium and magnesium supplements (1000 and 600 units, it's a standard pill)
To help with sugar cravings, try taking probiotics. Sometimes crazy sugar cravings can come from not having good gut flora. In my case I was on so many antibiotics as a child that I have very little good flora. The bad flora is yeasty and they like sugar, which makes you crave sugar and simple carbs. I've been taking probiotics for a while, and while I still want sugar it's not as bad, I've really noticed a difference. It can take a while to colonize your gut again properly, but it's worth it.
Also try and buy yourself a good blood pressure cuff, not a wrist one, they suck. Make sure your feet aren't dangling when you take it and if it doesn't work, don't do it again, try later.
I hope this helps.
Deadra, Wife to Adam , Mama to Beatrix (02/08), Hudson (01/10), and Mazarine (12/13)