Professional growth

I have been working as an assistant teacher for a few years now and would very much like to further my professional career and seek out better employment opportunities in my field as an elementary school teacher. 

I am holding myself back because of my personal life. My husband and I are TTC and this upcoming year may very well be a "blessed" albeit stressful one. This past year I had a miscarriage, an ectopic pregnancy, and a minor surgery to remove a septum in my uterus, and now we are finally back on track to trying again. If all goes according to plan we may with Gds help have a baby this year, or at the very least I  hope to be pregnant. 

My family is telling me to stay where I am and that now is NOT the time to look into switching schools etc. I am not unhappy where I am. Indeed, I love the school I teach at and have wonderful support there from the administration and my coworkers. I simply feel that I am holding myself back from growing further. I should also mention that my school has told me explicitly that they cannot offer me a better paying job than an assistant, and that this upcoming year would in fact be my last year with that position. 

Do I push off looking for new jobs now while

I am not pregnant but trying, or stay where I am while I still have a decent paying job for the time being?