hi, I have had 1 enlarged lymph node for 3 weeks now in my groin, and about 2 weeks late for my period..my doctor is sending me for a biopsy, my at home pregnancy test went like this: the line that says it is able to read came up and then a lighter negative line showed up....,my boyfriend had a vasectomy a few years ago but i did not ask details, and I missed about 4 pills out of my birth control pack...i have been gassy lately but thats about the only thing bothering me other than my missed period and my doctor cant see me for a week and a half...does this seem like pregnancy?