Pale yellow discharge?

[AmieRose]

Hi docs.
For a few months now right after my period I have been having a pale yellow discharge accompanied by an itch that lasts about a day and some chunkiness that also lasts a day or two. The itching and clumpy symptoms go away except for the rest of the month I have a very pale almost translucent discharge with no smell. There is also no smell while having the itch or chunkiness. I was urine tested for chlamydia and gonnorrhea. I have also been blood tested for syphillis, HIV and the like which have returned negative. I was wondering if this could possibly be trich or an STI at all? Could this be a side effect from my birth control pills? Should I consider being tested again for gonnorrhea and chlamdyia or can I trust in the urine test results?
Thanks

[gracefromHHP]

at this point, you need to see your provider when you have the discharge and get properly tested for yeast and bacterial infections vaginally.  you've ruled out common std causes, time now to see if it's normal discharge or not.

grace

[Vance2335]

You can trust urine results, see a Dr when it is happening because something is not right but not sure what it is. Not a STD if it only happens for a day or 2.