Baby’s movements

Rebecca

I’ve started to feel a little sensation in my stomach lower down could this be the baby? I’ve never had a feeling like it it feels like a small spasm in waves I’m 18 weeks today but when I went for a scan a couple of weeks ago I was measuring a week ahead so the baby is a little bigger. I am overweight so didn’t think I would feel the baby yet. I’m too scared to think it is but I’ve never had this feeling before!