I don't know what going on

I'm tired all the time for the last few weeks. I have also had some cramping throughout the week.  I have been getting headaches almost every night. I took a A pregnancy test because my period was supposed to start January 1 and it didn't, the test was negative and my period started February 3. I have been using the Clearblue Digital ovulation tests and for the last six days it said my ovulation was high but has never gotten peak. According to glow my peak should've been the 15th.  Is it possible I could be pregnant?