Period days different every month

Is that normal to have period sum month for 3 days and sum for 5 months 🤔🤷‍♀️ asking because last year in July I had sudden heavy bleed for one day and it came back to normal next day and period happend normally like for 4 days and then from then I started having period for only 3 days ( normal flow ) and then in December I had my period for twice in whole month ( 5-5 days both time ) and then in Jan again it happend for 3 days and now this month again it’s 3rd day and I can see it wil go till tomorrow as on 3rd day flow is nod heavy Bt not light too . Bt I m having all Af on exact days on 26 days cycle in each month except in December month. So plzz let me know is that normal or I shld go and check with my gyno ones as we are planning for second one so and it’s more then 6 month no success yet . I don’t worry about Bt now getting worried about my period .