Intense lower back/sciatica pain? Please help!

Georgia💚💙👶🏼🍼🐠🐟
I'm almost 27 weeks now and I know pain is normal in pregnancy, but I've never felt pain like this before! I'm afraid to take anything including Tylenol because of how dependent I was on it in the first trimester. This pain is seriously intense though it's like it radiates across my whole lower back and tailbone and it won't go away! I've had it since yesterday, but I was also having BH contractions a lot yesterday and last night too. Should I phone my doctor or see if I can wait it out? Does this even sound normal to anyone? 🤔😬