How many visitors do you get? And what is the % of traffic coming through search engines? If your visitors are coming through referrals i.e. social websites etc., then you shouldn't apply for AdSense right now. Wait for one or two months and then apply for it. Otherwise Google may disable your account even after approving. If it happens, then it may trouble you to get an approved account again. If your blog is ranked good in search results and most of your visitors are coming through searches, then you can simply apply for AdSense. You will get an approved account if Google your traffic is enough and organic.