Back Ache Relief?

Le
Hi everyone! First time pregnancy here (6weeks) and we are super excited! 🤗 
One of the symptoms that has been a major pain lately is a really bad backache. I've tried  sleeping with a pillow in between my legs, heat pad, and working on a better posture (I have terrible posture). I'm also trying to stay away from Tylenol although the doctor said it's OK. Are there other remedies that worked for you? This will not last the whole nine months I hope? 😁 Thanks in advance!