low-dose BCP (also in FFA)

Before conceiving any of my kids I used full-dose BCP and between kids I've used both the mini-pill and the NuvaRing. I've never had any problem with any of them but this time around I'm trying the low-dose pill. My little guy isn't quite 3 months yet and I'm breastfeeding. With the other two kids I BF and didn 't get my period back until I'd stopped. This time I'm not even through my first month of pills and I've been bleeding for over a week. It started as just heavy spotting about every 3rd or 4th bathroom trip. Now it's every time and I need to change my pad at least every other potty break. I don't know if this is normal or what. It's frustrating, though, I'll tell you that. In a few days I'll be at the last week of my pill pack, when my period should be and I'm already so sick of bleeding. Not to mention it's hard enough to find little moments of intimacy with your husband when your'e both exhausted and have 3 kids...the bleeding has to stop! Any one else experience this?