My mental health is getting worse i need help please answer :(?

i have bad mental health since my father ped away this year in feburary, and ive smoked a lot of weed after his death and it never seem to bother me before. i been getting paranoid so much, when cars p by, when i play a video game, looking at people, i feel like i seen all these people doing the same actions like im in deja-vu as well. i stopped smoking for 3months before and i still feel paranoid. i dont know what to do im really worried about myself, and i still havent gotten over my father but i know he ped away and is in better place but why do i feel this way? i need help. ive talked to a consular and it does not help me. i went to a child and family center for two days and i was bugging out thinking i was there before. someone please help me:(