Need encouraging words

My boyfriend and I have been ttc for 10 months now. I've been tracking everything I can and I'm feeling hopeless. I'm debating if it's time to see a doctor about getting professional help. He already has 1 child from a previous relationship so I know it's not him that's the problem. My heart feels so broken sometimes because it's been such a struggle. Any advice/tips/stories from people that have been in my place, I could really use some encouraging words right now..