Anyone?

mrs. laper • Married to the love of my life (07.09.22) B- (10-21-10) G- (01-19-14) A- (07-25-16) S- (08-30-18) R(08.13.19)
So for the past week I've been super tired like all the time I could sleep all day, head/backaches, cramping, all the opk's I've taken appear negative, I bought a cheapie pregnancy test yesterday, even though I know there is no way I could be (it's been two weeks since my chemical pregnancy
Is this just all unrelated, we really want another, but after my MC I just really have no hope.  
Any advice? What do I do?