Does trigger mess with bbt??

So my husband and I are on our first medicated cycle and I have been temping like usual (I didn’t hear any reason not to from my RE). I took Clomid days 3-7. My cd 10 ultrasound showed a lining of 6.5 and two follicles at 17 and 18. My RE put me on Estrace to thicken my lining and I triggered last night which was cd 11. IUI is scheduled for Thursday late morning. My temp has been normal until this morning when it shot up almost a whole degree. Could this be from the trigger shot or do you think I O’d early? Any advice is appreciated!! Thank you!