35 weeks and hurting/uncomfortable

I'm 35 weeks and my placenta is below my baby. I weigh about 145 and have only gains 10-13 pounds but baby is very healthy... Starting yesterday my stomach has been extremely tight and starting last night her movements hurt me some... And I feel I've been having a lot of Braxton hicks... It's the weekend so if it continues I have to go to the ER... But am I just over reacting? (Oh and she's breech I'm not sure if that matters at all with this)