PLEASE HELP!!!!!

Danielle

May be kind of long i apologize in advance. Me and my SO have been trying to conceive for almost 16 months, within the 2nd month of trying we had a miscarriage, we decided to try again. Since then we have not had any luck. Little bit more info. Im 26 and he’s 29 i have two children from a previous relationship he has no children of his own. We’ve both talked that it’s time to go see a DR about our issue, Im not to worried about me having issues as much as i am him. Considering i have 2 children and he has none. But then again we had a miscarriage before?!!! So I’m confused. 😕 Any who, I’m 12 days late for my period, yesterday i wiped away a pink tinge of blood when i pee’d, i wiped again and nothing, and since then nothing as well . I waited until today mostly because i felt discouraged and i didn’t want to get my hopes up; I decided to get pick up a test from dollar tree i took it and it was a BFN 😔 my symptoms are mildly sore boobs, acne, and back pain. That’s been going on for about 3 weeks. A couple days ago i started to get heartburn (not normal for me) and pain on the right side of my abdomen. Lasting up to an hour and then went away and I’ve since then had mild pain in the area. I’m curious to know has anyone been pregnant and had a false negative test from Dollar tree? Should i retest in a couple of days? Since i just recently had some MAYBE implantation bleeding? Is it even possible to have implantation bleeding 11 days late on period? I’m so confused and have mixed emotions about this. I plan on making a DRs appt this week. Has anyone else experienced any of this?!?