What it is? N what can be done? Exactly?

Hello... Its been yrs now i am facing this issue but i dont know what it is correctly...n so m not sure also to whom to see...can neone tell me wht it is exactly? Since 2010 i have started this feeling of voidness which includes loneliness, cryin, scared of being alone,scared of sleeping, heavy heart, loss of breath, a wierd kind of heaviness that makes me sick if nobody is around.. and sumtimes even when ppl are around... But it gts worse wen m alone.. so now its like i everytime need someone to be around wid me or else i feel like suciding coz of the way i start to feel is sumthing i cannot deviate from neither i am.able to concentrate on nethin .. xcpt how will i manage to liv at dat moment.I am taking homeopathy meds bt its kinda not working i guess coz i still feel it frequently and it makes me sick and difficult to do my things alone.. as even the thought of being alone bring the view that again m gonna face the same...n it gts difficult for me to feel nethin else frm dat moment.