I'm not currently TTC, but I have 3 DC - all of whom were conceived whilst I was (and still am) obese. DS1 I weighed 120kg, no complications, hospital birth. DS2 was born at home - no complications, and I weighed 150kg at the time. That was in 2006, I've remained 150kg, and DD1 was born in 2011. Again no complications.
There's no doubt that for some ladies, it is harder to conceive when heavier - but it's certainly not impossible. It is also accepted that, yes, we can have more complex requirements due to size - bigger beds, operating tables etc.
I have a friend who is similarly sized, and she has PCOS. She was refused treatment by one GP, until she lost a certain amount of weight. However, the PCOS was part of what was causing her weight gain. She changed doctors, and her new GP prescribed her the medication and as a result she has been losing weight.
Just as it's possible to be slim and unhealthy, it is possible to be big and healthy.