Helpp!

My husband and I are trying to conceive for our first baby. We tried in January but it didn’t take! We have tried a lot during the month of February. I have not started my period yet for February and its now going on March 1 (tomorrow). I have taken many tests but they are all negative. Do yall think its because February is such a short month? I usually start anywhere between the 24-26th of each month! So I’m super confused. I also have had all the symptoms of a period. Lol