Get your GP to refer you to a fertility specialist as they are the ones with all the power.
If your local hospital is Maidstone then you will have the same doctors as me, and they are great hun, you may need to go to Pembury Hospital occasionally, I have my follicle scans done there, its a bit of a trek but its only for scans everything else can be done at Maidstone.
I feel a bit like you, unsure if the OPK's were telling the truth or not .... fingers crossed ey!!!