Day 27..Temp really high!

well, i am 13 dpiui and day 27 and for the past days i sure have had a high temp....this am was 98.6 i feel really hot.....i know its a good sign..BUT i am really scared and am still kinda negative....i know i shouldnt be but thats just how it is when its the 2ww..knowing something was implanted in me and my body may take it or not????.....last night i was having terrible cramps...on both sides so who knows whats going on..i still have not tested as i am waiting for a period..