2nd operation. Yay or nay?

I was diagnosed with endometriosis at 18 during an investigative laporoscopy but have previously been diagnosed with PID (I think this was the endo because it took a further 2 years of false diagnosis before they did op) I went back to my gynaecologist and they have recommended I have another laporoscopy and my tubes checked. 
When I have spoken to people about this they have said I'm going to cause myself more problems with scar tissue etc.. 
I'm 23 and been ttc for 6 months with no joy. Any one got any advice?