Venting

I had a miscarrage at 7 weeks in May and my cycles are regular and 26 days long. I know my next period may or may not be delayed due to the miscarrage, and it just depends on the woman. My HCG dropped off pretty quickly. I only bled for a week and have had sex regularly since I stopped bleeding. I don't track ovulation or time sex, but I'm not on birth control. So my concern is, how will I know if my period is late because of the miscarrage or if i'm pregnant again? I don't want to have to look at weeks of negative tests (not expecting to be pregnant but who wants to look at negative tests especially when emotional following a loss?) I have a vacation coming up and i'll be drinking and I also regularly have to take meds that are not pregnancy safe. I know my only option is to just test to be sure but it just sucks.