Like onlyme said, I would test again...I'm not sure why your husband is telling you not to worry? There's certainly a chance that you could be pregnant considering you've had unprotected sex...Good luck
The c section may have caused the harder feeling in your stomach. Your discharge is realted to your horomones. You could just be out of wack. But it may have been too early to get a positive on a hpt if you tested 2 weeks ago. If you want, test again and see what happens.