Treating PTSD during pregnancy

When I found out I was pregnant, I stopped all of my meds since they were cytotoxic. Now, I can't sleep more than 2 hours, have flashbacks and am almost anhedonic. I try to vent to SO but he says I'm being negative. I also tried calling my OB and my attending physician but they kept passing the responsibility onto one another and neither wanted to help me. I'm afraid that my stress level is hurting the baby. Any suggestions??