Scared to increase dose

I have been suffering with anxiety for a while now. I was prescribed lexapro 5mg about 10 yrs ago and it worked wonders for me even at such a small dose. Recently I have decided to come off of it due to planning to have a baby. Since then I have had a major panic attack episode that lasted for 3 days straight and I ended up in the hospital as I thought I was literally dying. I am back on the lexapro but it is not helping me like it used to. I have constant recurring thoughts and I’m petrified to do anything outside of my routine. I also am having severe morning anxiety which is more mental than physical symptoms, which is something I have never had before. It has helped me get thru my day to day and stop the physical symptoms but the mental thoughts every day is what is really hard. Also getting random bouts of sadness out of no where. Maybe hormones are messed up not sure. Ferritin is also low which my dr says increases anxiety. My anxiety is manifesting different this time around. Psychiatrist thinks there might be an ocd component as well. I am scared of increasing the dose or switching to something else I am not sure what to do. Also scared with planning pregnancy on top of all of this, but I feel I won’t be able to handle being a mom feeling this way. I’m not sure what is the right move if anyone has gone through something similar? Thanks for reading.