Can I breastfeed?

I had a baby 7 months ago and breastfed for about 2 or 3 months and quit. Im 15 weeks pregnant right now and my boobs will leak a tiny tiny bit every now and then. Can I start trying to pump, would it work?? I feel dumb for asking but it would be cool to get a supply going for mine now and maybe even save some later on for the second before it comes.