I have gone through 2. The first one didnt hurt and the 2nd one hurt pretty bad. From what I have read if the person knows what they are doing they arent suppose to hurt. Good luck to you and hope it brings you a BFP :)
I did 3 as well last year.... the first one did not hurt the last two did... only because she couldnt get the cathater in my cervix lol so she had to keep trying then switching out sizes of spectrums lol... Good luck!!