It all about inflammation, and as you describe, you are dealing with a lot of it. And that will keep you from losing even if you eating very little. When the inflammation recedes, the extra water your body is holding in an effort to dilute it will pass.
Are you trying to lose while dealing with this? I think that would add unnecessary stress to an already stressful situation.
An ibuprophen substitute you might try is corydalis. Its an ayurvedic herbal remedy that in 50% of people relieves pain and inflammation as good or better than ibuprophen, without the nasty side effects and liver stress. If you are one of the lucky 50%, you will have found something safe and effective you can use anytime you need it. It works for my husband, but not for me. But I'm so glad he tried it. Its helped him immensely.