late period

Good day fam Am a lady that normally have regular 28days cycle but since three month ago am having irregular period but my irregular range from 26, days cycle 27, days cycle 28,days cycle 29days cycle and 30,000 days cycle and use to have it for 5 days but last month which is July I saw it on 7th of July and August is here have not seen it and today marks 40days cycle Please fam am I pregnant cos av not been seeing pregnancy syptoms except nipple sore And I did a blood pregnancy symptoms is negative both urine test and blood test are negative