I need help...

Hey girls.. so I'm not sure why but lately I've been feeling really down. I've been overly sensitive (more than I already am to begin with) and I find myself crying over any little thing. I've felt suicidal before and for some reason I don't know, I feel like it's coming back. I don't know what to do. I've had what I believe were panic attacks twice within the past month and a half. I've never had them before other than those two times. I've been very uncomfortable with myself in a way I can't even explain. I've been unhappy with myself. Both physically and emotionally. I don't think my post even makes any sense because that's how much trouble I'm having explaining myself.