less ejaculation

he i hope someone can inlighten me because i dont know if i have a problem or if its just because of other issues. Anyways me and my gf have been going out for arouns 2 months now and its going well. We do it nearlly every night mind you safe/none safe and this past couple of weeks i have noticed a major change in how much i ejaculate, as the weeks went on i seemed to get less and less, i left it for 2 days of no sex or anything to see what would happen but it was still the same if not worse and now it just comes out nearlly clear and trickles but it still shoots abit. It use to be very thick and shot further. any idea;s what it could be?  a quick response would be helpful alot thankyou, i want to solve this one quickly so i can go get tested for anything or not.