Discharge followed by spotting - worried

Hey ladies

Last week I had some heavy discharge... but it was yellow - odorless - but yellow!! Accompanied by some itching. I went to the clinic and got tested and so far chlamydia and Gonorrhea have come back negative, just waiting on a few more. But when the doctor was checking me she was pretty concerned and definitely thought something was wrong.

Now, the discharge has almost stopped and I am having light spotting.

My period is due next week but I’ve never experienced discharge like this or had spotting at all in the past.

Has anyone experienced this? Any ideas of what it could be?