So worried..

So these past two days I've been OVER board stressed and crying like crazy.. I'm 18 weeks and I'm lightly cramping. No blood or spotting. But now I feel like I'm feeling my baby moving like really low in my stomach like RIGHT above my pelvic area. And she/he is usually near my belly button to the left... I'm not positive if it's my baby that is low or if I'm just having gas bubbles. I'm just really worried... 😔 I don't want my baby to be hurt.. I'll hate myself so much if my stress causes my baby's life.. do you guys think my baby is okay..?