Symptoms coming and going

Nicola
Hi.
I'm nearly 5 weeks and yesterday I had the metallic taste in my mouth and my breasts hurt. I had a really good nights sleep last night, but today none of those symptoms are there? Well my breasts hurt a tiny bit.
In saying that I did the clear blue digital test this morning and it said 2-3 weeks which is an increase since Saturday.
Should I be worried?