Pregnant or not?

Nicole

I took the clearblue one last night , and this other this morning. Im 46 yrs old. I have read that you can have an evaporation line, when I took the first test it was negative but a littpe while later I looked and it was positive. What do you guys think? My lmp was 11/29 and I spotted for 6 days on and off Dec 29 thru Jan 3. Has anyone else experienced this? Its been 16 yrs since I have been last pregnant.