Hiya, hope my experience will be of use to you.
I was brought up in a very large close Italian family, where not only was breastfeeding normal, but everybody supported the new Mum, there was no awkwardness about it, it was just what you did when you had a baby. I never really thought about that until recently!
When I had my son at 18, I didnt even consider anything other than breastfeeding him, I remember being so excited when I first started gushing milk at about 22 weeks pregnant, and proud of myself that I would be able to feed my baby.
When I gave birth to him, the midwives were totally surprised that I'd chosen to feed him, making some ridiculous comments about how I'd give up soon because I was so young. I did stop when he was 4/5 months old, but only because I'd had to go back to work when he was 3 months old part time and had to go full time a month or so later and I just didnt know how to express.
When I had my daughter a year later, she was also breastfed, again I never thought twice about doing it, despite all my friends being totally disgusted by the idea, my ex thinking I was getting some kind of bizarre sexual gratification out of it (hmmm, yeah, mastitus is sooo sexy) and basically getting no support from anyone outwith my family.
When I had Emily however, things have really changed. When I had my first 2, nobody asked how I intended to feed, but at my booking in appointment, I was bombarded with breastfeeding leaflets and the midwife spent more time talking about that than anything else. I couldnt even get a word in edgeways to tell her I was going to breastfeed anyway, to save her breath and a few trees in the process!!
It genuinely hadnt occured to me that there were people (other than my silly teenage friends all those years ago) who didnt find breastfeeding normal until I came home from hospital with Emily. My father in law would walk out the room any time i said I needed to feed the baby, my mother in law would stand there glaring at me, huffing and puffing and making snide rude comments, and the rest of my husband's family were just as unsupportive. They constantly made remarks about how nhs formula was good enough for their babies so why wasn't it for mine, and made me feel awful about myself and what I was doing, counting down the months saying it was high time I stopped feeding her myself and gave her what she really needed. It got to the point where we would only go to visit them, I'd sit at the end of the road and feed her in the car, pretend to take her to the toilet to change her nappy and give her a top up in there, then drive to the end of the street and feed her again when it was home time. It was horrendous. And so different to how it is with my family. I've sat around the dinner table with my Grandparents, parents, aunts, uncles, cousins siblings, bf a baby with one hand and eating my dinner with the other without anyone batting an eyelid!
My husband's family genuinely have NO idea, Emily still has the occasional BF, usually in the mornings though. I'm so cross they made me feel so ashamed about what I'm doing. When i got my surprise bfp in October, I said to my hubby that there is no way in hell I am going through all that negativity and spitefullness again and this baby would be bottle fed from day one, and he got really angry with me, and said that all the kids deserved "equal opportunities" and that if I did it for 3 I could do it for 4. So I suppose at least I've got his support!
ETA: I am on my second marriage now, this hubby is supportive of bf, and I now live 500 odd miles away from my family.
My OH supported me 100% as well. The midwives gave me some leaflets on breastfeeding before they knew I was so set on it anyway, and they brought it up once, maybe twice. Maybe it hasn't felt like I've been peer pressured because I've always been set on breastfeeding.. I adored BF my little girl, I did so for 7 months, exclusively, and I'm looking forward to doing it with my son as well. 
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