Breastfeeding & still no period?!

I had my daughter March 30th. I've been EBF, no supplementing... All boob, no bottles. Anyways, I stopped bleeding at 5 1/2 weeks after I had her, I have had sex after I stopped bleeding (used the pullout method lol). I spotted for like 2 days a week ago. But still no actual period? What do I do?! Is it normal? I already have two daughters (ones two and my other is almost 3months.) I'm waiting to hear back from my obgyn about getting the mirena.