Poor you, have you tried any natural supplements such as probiotics, omega 3 oils, etc? I have very mild flares compared to others on this forum so I haven't yet treated with meds. I do find that I can't eat potatoes when I am flaring, so I substitute with salad for my meals. I also find that eating fresh, crushed garlic really eases my flares.
As for fertility and pred, I am way past the baby stage, lol but there are others that have had children and are planning families so they will be able to help you more.