If you are not feeling the need to have one right now and DH won't really talk about it, I'd say now is not the time for you. It doesn't necesarily mean that you are done, because the feeling may overcome you or DH out of the blue.
You still have plenty of time to have another child if the feeling returns. Having a baby over 35 isn't really such a big deal anymore, at least not medically. I had my first child one month before turning 39 and my second at 40 ( I was 39 when I got pregnant). The pregancies weren't any more difficult than a younger woman's, but being older means you get more attention, extra ultrasounds etc. Plus having done it before, you'd be much less anxious than a first timer, which I think helps. There are risks with older pregnancies, but there is a lot of testing for genetic abnormalilites, both invasive and noninvasisve, but many more women are having healthy babies at a later age, so it doesn't have to be now or never at 34.
My advice to you is to tell DH, if you haven't already, that you held a baby and it didn't make you want to have another one and see what he says or how he reacts. Then at least you might know what he is really thinking!
Good luck! It's a tough decision. DH & I only ever talked about having 2, but now that my 2 are 3 and 4 1/2 sometimes I think I'd consider having 2 more in a couple years - if i weren't going to be 44 this year, which for me is a bit too long in the tooth to be getting pregnant!