Please help me plz!!!! Anyone

Ok so I use this app Glow an also the happy my days they both say I'm late glow said my period should have came on the 9th and the app my days said the 7th idk what to do I took a test last week it came back negative I feel fine just mild cramps that all really had some heartburn last week but I feel like my self this would be baby #1 for me what she I do guys😥