Reg cycle march 4. 2 day cycle on march 30. Urine & bld test neg. Had a 2 day cycle on april 26. Could I be pregnant or what is wrong?

Nothing. You have a 26-27 day menstrual cycle which is completely within normal limits. This means you are ovulating on day 12 or 13 instead of day 14. If you are trying to get pregnant start trying a little earlier in the cycle, give it three months, you should be pregnant. If pregnancy is not an issue, don't worry about these menstrual cycles as they are normal.