Period came and hasn’t come again

Amber

So I gave birth 3/8. Bled until end of march. In April I had a period but I haven’t had another since. I really don’t wanna test because it would be so crazy if we were pregnant again. We only had sex once after first period. And he pulled out. No real signs of pregnancy except slight nausea. Is it normal for no period for almost three months after giving birth?