are you taking ibuprofen, i just looked up some contra indications for ibuprofen with lithium and blood thinners.

Interactions with other drugs

If you take ibuprofen while you are taking lithium, your lithium level may go up. This can increase your risk of toxic effects from lithium. You may need more frequent monitoring of lithium levels while on ibuprofen.
Taking ibuprofen while using "blood thinners" (such as warfarin and heparin) can increase your risk of serious bleeding.