Irregular, BC, sex

Okay this may be a little bit complicated. I used to take Lo Loestrin and then stop a couple months ago. In 2 days I’m supposed to go see my military boyfriend. All week I’ve been on and off bleeding and I was wondering if there’s anyway I can either stop or really lighting the already light bleeding to the point where it’d wouldn’t be messy if we were to have sex ya know? Anyways so now this morning I took two of my old BC pills is this gonna help anything? I read something about this girl taking 7 and then the next day hers was completely gone