Good day. I only read TS questions and did not read further on all other threads.
My personal view and comment;
If i am in your situation, i will follow my heart and go with it.
However after reading your thread, i reckon you have doubts in yourself. The problem lies in you. You have doubts in this relationship and do not forsee positivity.
In life, what is guranteed ? Nothing.
Life is short to think about what if this bad happens and that bads next ... too much bad and there is no hope and positive in both of you. Do you mean that if no baby, there is not going to be marriage ?
Do you mean, family protest, you both give up ?
Then what is Love ? or do you mean you THINK you love her very much and you THINK she desperate to marry to you DUE TO HER AGE ?
With doubts, you cannot see clearly. If you want a person to marry, you can find a suitable one. If you want true love, many spend a lifetime searching...
All the best to TS. Suggest dun waste that woman time if you are hesitant.