is it possible??

af is 2 weeks late, having nausea 4-5 times a day but no throwing up, hubby says I’m eating and sleeping more but my temps are crazy one day they’re up next they’re down it’s kinda been like this all cycle. Today is cd 44 I took a test cd 28 and it was negative 2-3 days before af was due. The obvious thing to do would be take a test right now but I will be completely heartbroken if it’s negative. My temps are the only reason I think I’m not pregnant, i also have no idea when I ovulated because of temps being crazy just been having sex all month. thoughts????