Is someone ever felt this before?

Hi!

So I only tried once before my husband had a trip to out of country and then no more try for 1 month. And now I am late 21 days, I already tried to test twice but it was negative. First I tried when I late for 3 days and second, I tried when I late 10 days. :((

I felt dizzy , cramps, I lost my appetite but it was negative twice.. I just don’t know what happened:(

Is anyone ever feel the same thing?