lack of appetite/no weight gain at 15 weeks

hey all. i am pregnant with my first baby and i am currently 15 weeks/2 days 💕

although i am in my 2nd trimester, i still have a very low appetite and i have not gained any weight. i have a bit of a bloat at the end of the day, but no pregnancy belly. i take a prenatal every day.

did anyone else take a while to gain weight? if so, when did you start putting on pounds? my baby was measuring on track at our 13-week ultrasound, but i am a bit worried... due to my pre-pregancy weight, my doctor said i should gain between 15-25 pounds.