My cycle is usually and average of 28 days but ever since I got my period back from my miscarriage in February it’s been 25 days give or take. My app says I’m supposed to get my period in 5 days but I took a pregnancy test from the 99cent store and it came out negative. I’m not sure if I’m just testing to early. I got like 7 canker sores in my mouth and my really moody and I’m always hungry now. Could this be pregnancy symptoms or just PMS?