No show period, negative test

Laura
Hi ladies, 
​Looking for advice. Me and hubby started trying in october last year, and got pregnant within 3 months. Had a mmc in feb at 11 weeks. 
​Started trying again straight after, but its totally messed me up. After the mc my cycle was 45 days, then last month 38 days. I really thought my body was getting back to normal and my periods going back to their normal 32 day cycle. Today, day 38 and due on, period is no show. Ive tested with one of them one step cheapo preg test strips and negative. 
​Im so depressed now. Im ok with not being pregnant, but just when i thought my periods were getting back to normal, theyre getting longer, not shorter! Anyone have this? Anyone had a total false result using these cheap strips? I dont know whats going on. All replies appreciated!!!