So my husband and I had makeup sex this morning but since then I have been feeling a lot of pressure…

So my husband and I had makeup sex this morning but since then I have been feeling a lot of pressure down the like I have to pee but can't. It's getting uncomfortable. Could it possibly be the start of labor for me?? I had my son between 37-38 weeks. This is not a fun feeling I have my 37 week check up tomorrow.