Thrush not going away - early pregnancy

Im 9 wks pregnant and I've had thrush for about 4 weeks now. I know it's thrush because I've had it before years ago! I've used 1 500mg pessary and cream for 2 weeks, followed by a course of x3 200mg pessaries and cream for another 2 weeks. Nothing's helped. As soon as I stop using the cream the symptoms come back it just isn't clearing! Before you say - talk to your GP - I went to my GP - couldn't even get to a doctor had to see a nurse - they asked me to do a swab test and just messaged me to say "we couldn't find anything, no further appointment needed". The itch is not going away and I do not know what to do!!