Braxton hicks??

Al

So this is my second pregnanc, I'm almost 24 weeks.... and I've been getting a lot of Braxton hicks sooner than I did with my first. That feeling where your whole stomach gets rock hard not really painful but uncomfortable. Except the last two times I've been with my husband I've notices not long after I get some Braxton hicks but also a painful tightening in my back. Just curious your thoughts on if this are still Braxton hicks or real contractions or just a sore back from sex??? I'm going to call my doctor in the morning just to see if it's normal but figured I'd ask here while I'm waiting for my doctors office to open!! 🤷‍♀️