PP Infection maybe??

So my pregnancy medicare ran out. And I don't qualify for regular medicare.. Unfortunately my doctor cleared me to have sex before the 6 week mark. But now I think I have an infection there is no discharge and no fowl smell but my lower abdomen hurts so bad. And I don't have the money to go to an OBGYN and I can't afford insurance... So that's why I am asking you ladies if any of you ladies might have an idea of what this might be...??? Like I said it just really bad abdomen pain that I haven't been having.. oh and I'm 7 1/2 weeks post partum.