Not gaining weight?

Hi all! I’ll be 17 weeks tomorrow with my first pregnancy and it feels like I haven’t gained any weight at all. I was 115 pre pregnancy & at my 16 week appointment I was only 116. My doctor says there isn’t much for concern at this time so maybe I’m just overthinking! I eat normally (about 4-5 small meals a day) so I don’t think I’m under eating.

I’m also not showing at all either and I feel like most women my size have already started showing by this time. I know I shouldn’t compare myself but I can’t help it. Sorry just had to vent a little lol, thanks for listening!