Sick note crisis

hi im currently waiting a tribunal day until then im supposed to send fit notes but my dr has decided that i no longer need them he was quite abrupt when i first went to see him saying i cant give you fitnote you need go back into work iv been devastated any way i left after persuasion with a fit note after this note ran out i had to see him again yes same thing again i needed to look for work as dwp will not pay you from my finotes he wrote one for another 4 weeks that ends on 6 june the cheeky sod even wrote/typed on it dont need to see you again you now be fit for work i am right in thinking i could still go to another dr with a different illness what do i do im lost 
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