Male infertility

So my SO and I are TTC , I've had two cycles since my IUD was removed. I've had one child, 5 years ago with a different man. He was a wonderful surprise the month after being off the pill. My current SO was previously married for 5 years with no pregnancy. He feels he may not be able to have kids but has never been checked. I'm not in a rush except regarding my age... Almost 35. Should we just seek professional help now? Or should we do the recommended year of trying on our own?