My periods are now 2 and half weeks overdue, I know it sorta could be because I'm breastfeeding... (I have only had my periods back 2 months since having bub) But we have been trying to conceive again and I have had pregnancy like symptoms (tender breasts, sore to feed, My boy has gone a bit off my milk, cramps) but I have done multiple tests and they are all negative... Is it possible to have low HCG even if my first pregnancy showed a positive test straight away?!
From what I have gathered your periods could be late because you ovulated later this month And hcg is not yet present or diet/stress can contribute....
it is possible to have negatives when pregnant, like you said, you might have low HCG so the tests are not showing it. i'd say go for a blood test, it's better than the frustrating waiting game.