can someone please help.

Okay.
So, I haven't had a period since January. However I've been getting pregnancy symptoms for a while now so I started taking pregnancy tests. I have been doing them over a week now, but the lines are not getting stronger, maybe only the tiniest but stronger. But the lines are very very faint. (But did come up in the time frame and are pink in colour) 
I can only see the line clearly if I use the light on my phone, or put it under a lamp.
I really am confused.. not really sure how to feel. I'm even more confused because I have the implant. Could this mean I'm pregnant, but its ectopic? Or am I going to slowly lose it? 
I have been spotting blood in the last 2 weeks on and off.  
Please help