Discharge question!

Lex
Have a question about my discharge.. Sorry for any TMI.. I'm 11+3 and for the past 3 weeks or so my discharge has been a yellowish color, tonight though it is more like a clear with a slight tannish tinge to it.. I feel absolutely fine.. No cramps at all, no pains, haven't had sex so I know it's not from that.. Not really sure what to make of it and my OB is closed right now, don't really want to call the on call dr since I'm sure it's not an emergency. I guess I'm just looking for any ladies that have experienced this before, like is it normal towards the end of the first trimester for my discharge to change? Thanks ladies!