Back pain and contractions:

Hey FTM here!

Yesterday afternoon I walked with my MIL to get my niece from daycare, the whole walk is 4 miles. I have been pretty active during my whole pregnancy, but I don’t think I’ve done 4 mile walk in a little while..

Well the whole walk was easy, it was a beautiful day, and it felt nice to walk at a slow pace... when I got home and put my feet up because my hands,feet, and ankles were swollen. I started to have severe back pain, contractions, and sharp pain in my vagina (lighting Crotch). I was crying and doing my birth breathing but it wouldn’t let up.. Should I call my OBGYN ?

The pain has let up some but my back is still killing me and I’m still having a few contractions an hour. I just don’t know how to time them, & I’m not sure they are contractions.

Help!! Lol