Is Small Amount, Thin, Watery And Clear Semen Normal?

Me and my husband have been trying to conceive a baby for 1 year. I have one child from a previous relationship. My concern is that every time he ejaculates its always a small amount, thin, watery, and completely clear. Even when we abstain from sex for a few days for it to try and build up its always the same. Can this alone be an alarm to go get a sperm check done?