Hello to all!

I got married last month and have had sex a few times with my wife. It was difficult for us at the start because both were virgins (we don't live in USA). However, I managed to penetrate her a couple of times.

What I have started noticing now is that my semen has become too watery and is not thick as it used to be before. For the second and third time, its natural to get watery but even for the first time its not thick and white anymore. I have no idea what happened since this change has occurred after marriage and would love to get some help from you guys here. Also suggest which sort of doctor looks after this issue? Should I consult a male fertiility doctor? Thanks.