Could I be pregnant or is my body adjusting to having removed Mirena ? 11 days late!

Hi!

I'm wondering if I might be pregnant or if my body is still adjusting to having removed Mirena IUD. Took out my Mirena IUD on October 23, after er having it for 2,5 years. I hardly ever had any bleeding while I had the IUD in, but on the 25th October I had my first period, and then my second period on the 28 November (32 days cycle).

Now I am 11 days late, an no sign of a period! Period was due on 30th Dec, took pregnancy test on 1 jan and it was negative. On jan 2 I felt like I was Pms-ing, and had teeny bit of brown discharge day after. Took another test on the 9th jan, also negative.

BF and I have been using the "pulling out" since I took out the IUD, but he has never fully ejaculated anywhere near my vagina, is it still possible that I've got pregnant from pre-cum? I'm currently backpacking through Vietnam (hot and humid). Over the last few weeks I have felt constipated some days, peed a lot some days and had cramps in my stomach (not lower abdomen) some days, lately also had a lot of clear, thin discharge. But I'm also eating a lot of new foods and drinking a lot?

Thoughts or advice anyone? Please!