20 weeks today and no baby movement in last 3 days.. Pls help..i m so scared... Cudnt slp last night

Prishi
Hi ,I was crying whole day n night bcs I started getting flutters at week 17 and I ws feeling baby everyday.. Now i am 20 weeks..Since last 3 days thr is no movement.. I am scared ..I dnt want to lose my baby..I m scared to go to doc bcs I dnt want to hear any bad news...is it normal not to feel baby for few days..pls reply