Struggling with Antidepressants: Need Advice

I take the max 200mg of Zoloft and 20mg abilify and Klonopin. I still have bad anxiety and am constantly on the verge of crying. my meds were working good then in May I lost my mom, I had to move, my son went to sober living and I had to re-home my dog. so it's been a rough couple of months. I miss my mom so much. I feel like my Zoloft is failing. every med I've been on fails eventually. my insurance won't cover trintellex. I felt the best on that. I'm just wondering if anyone has had several antidepressants fail? I feel like I'm on a rollercoaster.