Honestly?
I don't think they will move ahead that quickly anyway - so I think you will be waiting until after the train journey, so not a problem in that regard.
You should be giving yourself a bit of time to get over the shock and make rational decisions together in any case, instead of knee jerk 'get rid'. Give yourselves a chance to think things through once the shock has worn off. You have plenty of time to make a decision to terminate.
I'm curious why you were testing at that point though? You obviously had an inkling that something was up?
In any case - woah! Slow down!
Termination may indeed the right thing for you, but today is not the day to make that decision.
What does dh think? (It is your body, but your decision around this subject WILL have repercussions for your relationship, so you need to make it together).
And no, of course there is no right time to have baby. No one is ever ready. There is always a new car, new flat, new house, big holiday on the horizon, good jobs, prospect of promotion, etc etc. But it is also entirely possible to make it work if that is the decision you choose.
Look at both routes, both set of what-if's. Consider your company's policies, maternity/ paternity leave, timings (baby for Christmas?) and whether you were ultimately planning a family together, but further down the road, or whether you were always planning to be a childless couple.
Life pretty much NEVER works out how you expect it to. So sometimes, rolling with it isn't a bad thing.
I'm not trying to persuade you to keep the baby btw - termination is always a thorny subject (I had one, and have never had any regrets, but I know a lot of people do suffer later - knowing their child would have been starting school/ a teenager/ leaving school etc etc) and it can indeed lead to feelings of guilt etc (but like I said - not here).
The important thing is to give yourself a chance to process all of those thoughts and make the right decision, so that you minimise the chances of struggling with the decision you make later on (years ahead, for either decision, not in the short term)
Good luck x