Firstly, if you don't want to make the decision to terminate you don't have to. If the fluid keeps leaking to the point that there is none left then there's a good chance you will go into spontaneous labour anyway. They can give antibiotics if infection occurs.
Secondly, as long as your membranes are still mostly in tact there is a chance that they will heal themselves. If it is a slow leak, there might just be a small tear in the membranes and that definitely can heal itself. Bed rest is very important.
My membranes ruptured completely at 24 weeks, like an exploding balloon, so there was no chance of that fixing itself, but provided the main amniotic sac is still mostly in tact and it's only a small tear and a slow leak then there definitely is a chance it'll heal and everything will be fine.
Sending lots of positive thoughts and hugs your way. It definitely is a very scary time indeed xx