Period after breastfeeding

I breastfeed my son until he was 9 months old (in May). I got my period after that as expected. But I have been having crazy long and weird periods ever since. Sometimes it's 2 weeks long or it's just light bleeding where all I need is a panty liner. But I feel like I'm constantly on my period and I'm soo sick of it. It's like I only have 1 week the entire month where I don't have to wear a tampon, pad or liner. I'm soo tired of it!

I'm just curious if anyone else has experienced the same thing or is it just me? I got an IUD placed after having him and I thought maybe that was causing the bleeding but my gyno said irregular bleeding can be normal upto 6 months post breastfeeding.