anxiety struggle

I'm seriously struggling! Lol. I suffer pretty bad anxiety and ever since finding out I was preg, I stopped taking my supplements (the only things that keep me calm).  This is my 3rd pregnancy and a surprise. My first 2 I had anxiety but nothing out of control and working out kept it at bay.  Once my son was born, he was in NICU for low platelets and almost died. it brought on severe anxiety that I couldn't control and didn't feel right taking anything because I breast fed him for 21 months.  We recently moved to a new state (so no family) and I was finally making time for myself, taking my supplements and feeling like the pre-anxiety me. We had no plans for a 3rd but it happened. I'm so thankful one more baby is in our future but I'm terrified as well. I can't take my supplements now and I won't as long as I nurse the baby either.  My anxiety has already started back up and our family has been sick off and on for almost a month so I haven't gotten to go to the gym which typically helps my anxiety a lot as well.  I'm just so nervous of not being able to get to a steady place with my anxiety for a year or 2 or more and it's of course giving me more anxiety lol.  Any advice from anoyone who suffers anxiety would be greatly appreciated. Sorry for the long post lol