The tight-rope of submissions, simultaneous submissions, acceptences, rejections, withdrawals, forthcomings, etc. is hard to balance. I eventually got too confused, and committed too many faux pas, that I finally devised an excel spread sheet listing a) the title of the piece, b) where it had been submitted too, c) where it had been rejected, and d) optimal/potential places to submit if needed. I think most writers have some sort of system. So what does your submission log look like?
Tabbing from cell to cell often feels like Frogger — squish.