Twitches in Uterus / Lower tummy

Bakergirlkl

FTM .

I am 21+4 now . For the past few days I have been feeling some pain in my tummy sides which I was told is stretching pain m and is normal. So far I haven't felt any baby movements yet except a few a squishes occasionally which I assume is the baby.

Today since an hour or 2 I have been feeling some sudden muscle twitches in the inside of my lower tummy & also feeling some fluid shedding kinda movements (like what I usually felt when I had heavy periods ) but if I check there nothing jus discharge . I am so scared and praying hard that nothing goes wrong .

Please tell me this is normal / is it jus gas may be / should I rush to emergency ?