I Was Prescribed Ferrous Sulfate, I Am Taking Omeprazole Over

I was prescribed ferrous sulfate, I am taking omeprazole over the counter because I am experiencing severe acid in my stomach, I am going to a free clinic because I have no insurance at this time my blood level TSH was low 0.03 I'm taking levothyroxine 150mcg so I cut to half until I see Physician since it is a free clinic I can't get a call back and can't see Dr until Feb 1st. For the past 2 weeks I have experienced a little tingling in my mouth which is scaring me. I am also taking xanax 0.5mg since June. I suffered anxiety and a little depression after the loss of my mother who passed away in March. I just don't know what to do