Spotting for the second time this month???

I had spotting in the beginning of this month from the 2nd to the 5th and today I started to spot again and now has gone away, both times it was light and pink and only when I wiped. I already took a test and it came out negative, but I know it may be too early to test because I’m only 11DPO and my period should be here on Friday. I did have a miscarriage in November 2019 and I don’t know if I could be pregnant so soon or if its my body getting adjusted to having a menses again. Im just super paranoid because I would like to know early on if I am. When I was pregnant I found out at 2 months, I am very irregular so I didn’t think I was pregnant. I had gone out of the country, took strong Benadryl, and had been super stressed and I know some people say that certain things like stress don’t affect a pregnancy, but I feel like it does? Just need advice please!