trichomoniasis help

I think I have Trich, my partner cheated on me a while back and in result gave me chlamydia, I got treatment for this and I’ve been tested clear twice since however something still doesn’t seem right. I’ve googled my symptoms and Trich seems to be keep appearing. Would anyone know where I can get a free or cheap test for this as all I can find are ones which cost around £200! Thank you.