ttc after miscarriage

Shelby
My husband and I have been ttc for 3 years. I found out I was pregnant for the first time in January. We were on top of the world for a short time then I suffered a miscarriage in February at 12w 5 d. I have been adamant about trying again since then, as I feel this is the only way to heal. I had my first period after my d&c on April 5. All the apps say I'm a day late (apps say AF should have arrived May 3). I've been thinking I've had some early pregnancy symptoms - light cramping, nausea, thick white discharge, but no tender breasts. So of course I've been taking tests. All have been negative, including this morning. Do I consider myself as truly being late? Should I expect my cycle to be off since I've only had one since the d&c.  Any advice?Ps. I've been using Clear Blue tests and have read that they aren't alway accurate.