Sorry to hear you're having an awful time, when to stop is a difficult one and I guess only you and OH can answer.
there are plenty of ladies that have babies at 43 and if there's nothing wrong hopefully it will happen. I do understand 18 months of ttc is enough to make the sanest of people go mad! I'm 10 months ttc and feel slightly unhinged!!
Personally I've said to my hubby i want to try for another 6 months because I'm finding it hard to cope with not getting pregnant and i want to enjoy the children I'm lucky enough to have. But who knows how I'll feel in when the 6 months is up.
Don't feel guilty honey.
Sending you lots of
![Hugs :hugs: :hugs:](/styles/default/xenforo/smilies/hug1.gif)
Maybe today is just a bad day + you feel more positive tommorrow.xx