Missed period and anxious

Hello everyone.

Please advise, I have been trying for a baby for almost 2years and I have a normal cycle I guess about 28 to 31 days cycle. I never miss my periods at all. For the first time now in November I missed a period, not spotting no bloating. Since missing my period I keep having that mild pain as if I’m Ovulating. I took a pregnancy test on the 14th November and it’s negative. I’m not sure what to think. Been thinking I should wait for about 2weeks n test again. But my mind is not giving me peace. Been feeling very tired lately more like fatigue. I’m so scared to take a test again.