late period and 2 negative hpt

[ca dreamin]

I just signed up today. Lookin for some advice. My period is usually every 26 to 27 days. Today is day 28. Last period on May 14th. Date that sex happened was 5/21. A couple of symptoms tingly feeling in uterus, feel warm alot (usually always cold), feel bloated, brushed teeth yesterday mornin and had bloody gums (small amount), but took a pregnancy test on day 26 and yesterday both negative. Ok and TMI last night when I went to bathroom tested a very small faint pink with white when wipe. Is it possible I'm preg? Or just makin myself crazy?
Oh and today - No sign of AF.