Please help-

Lately im questioning my sexuality, i did it before but now this question is REALLY poisoning my mind, i dont know if im a lesbian,bi or just confused. Its so stressing, i know i should take my time but... yeah, PLEASE help me im in PAIN, (alsp ive considered talking to my brother whos transgender but its a big rist to take, i know he would support me but im stilll stressed) 

PS. I shouldnt propably post this but I seriously need help with it and I dont reaaalllyy trust my family