Clearblue digital. HELP!!!!

Please can someone help me, my doctor won't see me until I'm 8 weeks pregnant. My LMP was 26/04/15 I did a hpt on 20/05/15 and got a faint positive the next day I went out and bought a clearblue digital showed pregnant 1-2 weeks. My lines have been so faint so I left it and re-tested on 26/05/15 showed pregnant but still  1-2 weeks, I've left it and tested again today and it's showing pregnant and yes again 1-2 weeks. Has this happened to anyone else? Shouldn't it show 2-3 weeks by now?