Congratulations on your pregnancy
. I understand you wanting to get off the Effexor
quickly as you are pregnant, but if you do not withdraw slowly, you will get withdrawals, as you are experiencing.
I was on 150mg for years, but I am lucky and could withdraw slowly, so it took 10 months, and I was fine with no withdrawals. You do not have that option. I did go cold turkey off Effexor once before, and was bad for 2 weeks, and then fine until depression returned.