10 days is quite a long time but some BF babies can go up to a month without pooing, I think Dr. Sears saw one that went 31 days and my eldest went 21 days at one point. Usually this happens after 6-8 weeks though. I'd get your LO seen by a doctor and if he/she says things are ok then just wait and see; if you're concerned LO is getting uncomfortable then you can give something like lactulose solution (not sure if avail. in the US) which is a medicine based on indigestable by-products of sugar, syrup of figs is similar but not sure if its suitable for young babies, suppositries are recommended by some but one of the dangers of them (or the other method of trying to stimulate the bowel using a q-tip) is that your baby may struggle to go in future without the suppositry or stimulation.