Modern science has treatment and answer for unexplained infertility and this is very much true. Nowadays, you may find many options to curb this problem. Do follow these things:
1). Don't take too much stress.
2). Take proper diet.
3). Exercise daily.
4). Do not smoke, drink and take any drugs.
5). Don't worry be happy.
6). Consult IVF, Infertility, Male problems doctors. They will definitely help you.
I have heard of FIRSTSTEPIVF clinic. Their doctors are awesome and result-oriented.