Need quick advice! Like fast, I am having a harsh pain come and go around my bottom area. Not every…

Need quick advice! Like fast, I am having a harsh pain come and go around my bottom area. Not every time but off an on I will feel it in my front area. Are these contractions and do I need to go to the hospital?! It hurts worse sometimes than others. I am not constipated bc I have gone and I don't think it is an air bubble/gas bubble.