first time mummy

so recently i check my own test, there was a faint line but i wasnt really sure if i was really pregnant. but then as time goes on, im having alot of the symptoms & changes. im feeling more fatigue & sleeping more than i usually do, food aversions, being more bloated than i usually do, & my tummy is getting bigger which weird because my weight isnt gaining. however, i went to both gp & poly to check for urine & blood, both is negative. im worried & dont know what to do anymore. any mummys out there have the same experience? or can help out?