I’m 15w3d, second baby and I’ve been feeling flutters for about 2 weeks, once or twice a day but all of today I haven’t felt a thing, has this happened to anyone else?

I know people may say it’s too early to feel anything but I know what I’m feeling as it’s in the same spot, hard to explain but it’s like a little fish making a quick movement, but as of today, haven’t felt anything. I’m trying not to stress

Thanks ladies.