Implantation bleeding or pregnant🤔

Nicole

My boyfriend and I have been trying to conceive for about three months now but I never seem to conceive. Last month I thought I was forsure pregnant since I thought I had all the symptoms. I took a test two days before my due period which was December 27 and it came back negative. On dec 27 I got my period but it only lasted three weeks which was very weird to me since my period is usually a week long. I don’t know if it was implantation bleeding or my actual period but if it was my period it was very short and it’s never that short. On new year I got super sick with diarrhea and I was throwing up constantly. There’s times when I get a sharp cramp in my vagina. Now it’s a new month and I’m trying to conceive again. Today I’m supposed to ovulation. My question is should I test to see if I’m pregnant from last month or should I wait until January 27 to see if I’m pregnant?