Inconsistent discharge

I have now tested twice for an STI but both tests have come back as negative.

However, my discharge doesn’t seem normal to me. I don’t have any other STI symptoms, other than irritation every now and then that feels like a slight itch that comes and goes just as quick.

My discharge can be clear and sticky one day, creamy white another and then almost like a very light yellow/green the next. It’s not a very prominent yellow/green, just a subtle hue.

I don’t have a clue what is going on if it’s not an STI. I tried Canesten in case it was thrush but that didn’t help, also medication that treats Trich but no good either.

I’m unable to go to the doctors right now due to coronavirus so I’ve been worrying a lot because I can’t figure out what it could be because of how inconsistent the symptoms are.

Any help would be greatly appreciated!