18 weeks and i stopped feeling the kicks?

so i am 18 weeks today (whoo hoo!) and i have felt the baby move and kick since around 14 weeks. well, for the past 2 and a half days i havent felt much of anything. i have had a cold for the past few days, but would that have anything to do with it? im slowly going insane that something is wrong! thanks in advance for your help!