Chronic pain & pregnancy

I was wondering if anyone with chronic back pain (ddd) has some advice on how to reduce pain during pregnancy. I’m 25, 11 weeks pregnant, first pregnancy. I had an l5s1 microdiscectomy in 2015. And I’ve been great since. But I carried a freezer upstairs and outside a few weeks ago and now realize I may have totally overdone it. I’m almost back to my pre-surgery pain. I obviously can’t use my usual remedies like hydrocodone or a steroid. I tried some Tylenol since my doctor has said that’s safe but it hasn’t touched it. Chiropractor makes my pain worse. Any advice or tips would be great.