I was on Avastin from May 2012-Dec2012. I got it every other week. The reason I was on it, it is one of the few drugs used to treat both advanced Kidney Cancer and stage IV TNBC. One of the side effects, which I got, is very very high BP(Blood Pressure). My December I was on very high dose of meds and we got it down to 150/90. With in the last month my pressure started coming down and I was taken off the Beta Blocker I was on to control my BP - my last reading was 110/70 and my heart rate was 40.
I'm sorry that you had a terrible week-end. The side effects of treatment can really be awful. The worst part is you never know in advance which one's will crop up, when they will, and how intense they will be.
Hugs and healing vibes.