Need some advice

Ashley

37 and 35, trying to conceive with my husband ( newlywed and would be his first, my 4th). After Sept 3rd (last regular period of 5 days). My period have been short 3 days lately. This month before my period which was 2 days late, I really thought I was pregnant. Even thought that maybe I was further along because I could swear I felt movement and tried to exclude it being gas and also it’s somewhat uncomfortable to lay on my stomach. Cramping has become mild as well. I don’t know what’s up with my body, I have an appt soon but I wanted to see if someone experience lighter periods all of a sudden. Is it because I’m getting older? Tia