Fertility tests

So I will be 25 may 1st.....I also start getting tested for fertility problems in may....I had 2 children when I was a teenager. ....my husband has 1 son. We have been trying for almost 2 years. I just don't understand why we are having these problems. But any way. I was wondering about <a href="https://glowing.com/glow-fertility-program">iui</a> and <a href="https://glowing.com/glow-fertility-program">ivf</a>. Is it best to just skip straight to <a href="https://glowing.com/glow-fertility-program">ivf</a>? I know im getting ahead of myself but I'm curious what others think