Second child or nawh

I am 30 I use glow to track my menses. AT this time I am not trying to conceive, however my son is 4 and he wants a little brother or sister. I am single again. I am also a teacher. Additionally I am also going back for medical school to become a PA . I want to do the sprem bank thing and part of me want to wait for love but I am 30 he is four and time is passing us (well me) the question is if it were you would wait or not....

Sincerely single mom wanting another addition in her life...