TTC with chronic illnesses

I was just wondering. Was there anyone out there taking humira, keppra, or lialda for any reason? I'm taking all three on a daily basis for my rheumatoid arthritis, epilepsy, and ulcerative colitis. My DH and I have been TTC for almost 2 years with no luck. All of my drs say these medicines don't have an effect on fertility. And my DH and I have both been tested and we are both fine. I can't help but to think taking all three of these meds together is making it harder for me to conceive. If any of you take these and have success stories I'd love to hear them. I need to have my spirits lifted.