question about zoloft dosage

I've been taking Zoloft for 2 1/2 months now. At first I took 50mg as I'm fairly sensitive to medicines. (prozac made me feel really drugged up)

then the PA bumped me up to 100 mg. each bump I think it helps a bit, but this week has been horrible anxiety and return of fairly acute agoraphobia - likely understand trigger this week - three friends of mine had deaths (one husband and two moms), this trigger is strongest for me, as my parents died when I was a kid...abandonment is the biggest trigger.

what has been your experiences with zoloft, do I keep bumping up? would 200 be better? or do I go to 150, or add something with it,

today I could hardly get out of bed and husband was working...I had to deal with my three kids and get some functioning done! My sweet daughter climbed in bed and held me awhile and then invited me out to lunch...but i was fairly shut down by then.

ugh.

Added later: oh, I forgot to mention, this new therapist that I saw only five times has resigned, and I'm waiting in no-mans-land for a new appointment with a new therapist, in the mean time it's been bad anxiety.