I had a little girl on June 23 and started taking Loestrin 24 at the end of July.. I got off of it at the end of October and had my period.. Its been a month and a half since I've been off and still no period.. I have only had unprotected sex once and I don't think he did it inside.. I've taken only one HPT and it was negative.. Does it mean I can still be preg-o?? Is this normal??