I had implantation bleed 4 days before my period was due , i am now 3 weeks late for my period . I have tiredness,nausea, metallic taste, hunger, itchyness, bloated tummy, im irritable, im going to urine often, im gassy my breasts are larger and Montgomery glands standing out , nipples are darker,always getting out of breath. Took urine test today and it was negative as have been all previous tests. Whats going on can i be pregnant or is it something else. Had sex in 5 days leading up to ovulation when my cervical mucus was watery. I gave birth 5 months ago to girl at 23 weeks and lost her . Please help