Heavy white discharge & vaginal swab bad results?!

So I’m 16, sexually active, have had more then one sexual partner and on “the pill”

When I first started getting discharge about 2 & 1/2 years ago, it was kinda heavy and annoying. But recently it’s been slightly odurous and a yellow/ creamy colour. Lately it’s been itchy and quite red. It also stings when I use frem fresh (however I shave regularly) I have a slight dull achey pain in the lower tummy and have started to get headaches and feel weak a lot (however my diet is quite bad)  I went to the doctors and they diagnosed me with thrush and treated me for it and it’s still the same as before after finishing medication.  when I had a vaginal swap (in the gp) the results came back and the doctor phoned saying it’s not thrush and I need to come in... I have very bad anxiety and have just came off fluoxetine for it and I am always stressed and worrying so as you can imagine... this is scary to me!! Just worrying what it could be really or if it’s anything serious, I have a boyfriend and I’m worryed this could ruin things! Thanks xxx

You should go get that checked out sounds like some type of STD

I’m having further tests Monday, for stds fingers crossed🤞🏼

When I have sex it feels very hit down there like burning the way... ??/