I was getting traffic to my site 2 days ago but then I resubmit my sitemap to google and today i did not get so much traffic, Is it due to resubmission of sitemap? Is resubmission of sitemap is ok? If ok then please suggest me an interval for resubmission of sitemap I mean, after how much time should I submit my site map to google?
Don't think this would affect your traffic that bad, but I may be wrong. I don't think there's s a need to resubmit, I'm quite sure Google will parse the sitemap file automatically for you, but either way it wouldn't need to be re-submitted unless you've done many changes to your site.
yes your position be affected after any touch for sitemap but this is so temporally , dont worry it will be back ! don't re-submit your sitemap but just regenerate it if necessary !
Google sitemap for a reconfirmation must wait a period of about a month. The map will update your site within a few days, but the index is at least a month's time.