If one is very technical, the only vocations per se are to the religious life. Religious should be called by God, not decide that it’s a good place for them, iyswim. Call in Latin is vocare, so vocation comes from that: being called.
What we each have is a state of life, and that is wherever we are in the present. So, I am a wife and mother–that is my state in life. My daughter is a single student: that is her state in life.
I am not sure where the pressure comes from to marry, but really, it is not necessary. It’s not like people should either marry or go into the religious life! People can remain single and do so much that needs to be done and really dedicate themselves to it, so they should be encouraged, not made to feel like they are missing out or doing something weird.
People can dedicate themselves to their work, doctors, teachers, etc., or to a way of helping others that is not financially renumerative–accountant by day, evangelist or homeless shelter coordinator or visitor to the elderly by night.
One of my big regrets about not returning to the Church til I had children is that I totally wasted my single years when I could have been doing stuff to help others
So, if you are not called to the religious life, don’t worry! Whatever is God’s will for you will come into your life; in the meantime, you have the time and the freedom to do a lot for others.
Maybe you could start a confraternity or association of people who are not religious or married (No Vows) because there are others who feel as you do.
Don’t waste this time…