Implant and constant spotting!!

I've had the implant for 5 months and I've been spotting the whole time. Spotting to where I have to wear a panty liner or it will ruin my underwear. I've gotten so used to it that I've just have been using light tampons instead. I'll stop spotting maybe for like 2-4 days but then it comes back. Should I go and talk to my doctor about it? I also hate the spotting because I've wanted to have sex but don't want to gross my boyfriend out lol! Help?