When I cough I have pain in my lower left abdomen?

Muscles strain. You likely pulled a muscles in your abdomen from coughing hard. Advil or aleve (naproxen) will alleviate the pain or at least reduce it. If you continue to experience pain you should go to your gp.
Hernia? It is really hard to tell without examination. I suggest you see a doctor you like and trust.

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I have bronchitis. I'm 10 weeks pregnant & when I cough I have a stabbing pain in my lower left abdomen? Wondering what it is

Obstetrician. This is probably ligamentous pain with an enlarging uterus, but if it is very severe the best way in which to solve this is to go to your obstetrician and be examined. Good luck and have a great baby. Read more...