Hi, and welcome! I'm so sorry for your losses...so sorry.
Yes, I think many would have the problems you're having right now.
I agree with Candybear that you should be in therapy as you're learning that meds only go so far. They can help ease the symptoms but not take them away.
Talk therapy can actually work through these fears you're having and give you tools to manage them better at the same time in conjunction with the meds.
Please seek out a good talk therapist who deals with PTSD/anxiety disorders.
We're here to talk with as well.
I wish you well.
KD