.........LOL
Sorry, don't really mean to laugh at you, but oh do I remember those days of wanting to know.....needing to know; wanting to believe my theory....any theory that would say that my female was indeed pregnant. It is an awful and wonderful time rolled into one; anticipating the excitement of the pitter patter of puppy paws and yet also feeling the fear of "what if it didn't take?".
From the other thread you started with the belly pictures, I am still going with my theory/guess that Bella is pregnant. Likely by now, yes her belly is starting to become more firm, their moods change, etc. How about her appetite, has it increased....decreased and then increased? I haven't had a girl yet that did not get morning sickness, lasting about 3 weeks, but then their appetite returns with a vengeance, eating at least three meals a day. Watch for (or have you noticed) a clear sticky discharge; this at around the 5 week mark is an almost definite sign that they are pregnant. Most of all, as hard as it is...........try to sit back and forget about wondering "if". Just go with the idea that she is pregnant, read up on anything & everything you can about canine pregnancy & whelping, and then read some more. Get the needed whelping supplies together because before you know it, those puppies will be here.