Postpartum question

So I gave birth on the 18th may bled for a few weeks then stopped had my first period lasted longer than usual which would be normal and it stopped about the 10th of August. My partner and I were having unprotected sex and I was sure I was pregnant again but I started spitting on the 29th of September the spotting lasted A few days then got heavy like a period I've had no clots like I usually do and I usually have horrible cramps but I've had no cramps at all I keep forgetting I'm even on my period, I feel like I'm getting pregnancy symptoms but even though I am bleeding