Celexa ans ABILIFY

so i been on celexa for 2 years did well on it but 5 months ago it stopped working and doc added abilify the anxiety and depression were gone but i felt extremly lazy tired ans no motication but it was better then being depressed and having anxiety. did a follow uo last week and he was not happy with my weight gain, i was 120 when i started and combo i am now 167. so doc decided to take me of celexa i was on 30mg no tapering off slowing he just took me off, but kept me on the 2mg dose of abilify, i been feeling ok so far just still tired hungry and wanna sleep about 3 hours after taking it, but seems like my worry is back that i will fall into a dark hole again. has any one been on just abilify for anxiety and depression? would love to hear any storys to ease my mind a bit.