Worried so much

I am 4 weeks and 6 days pregnant. Im having this mild smelling discharge. It shows yellowish brown on a pantiliner but it’s milky white on my finger it smells mild but only when I put in on my fingers it smells a little fishy but not strong. Is this normal? I have a doctors appointment Monday but I don’t want to miscarry between then.... first time mom.. don’t know what to expect.. I’m not having severe cramping very mild cramping on and off. It’s just my discharge? I understand pregnancy discharge has a mild smell but I’m worried anyway. I have a uti and my doctor prescribed me some pregnancy safe uti medicine and I think it’s giving me a yeast infection.. ive had BV twice in my life and usually it’s a very stronger smell but this isn’t so strong but it does kind of have a mild fishy odor when I put it on my finger only. does this sound normal? And why is it this color on a pad?