I had a D&C March 1st, and have been having sex through out the month with the okay with my OB. He told me I should start my period between 3-4 weeks after D&C.. which was March 29th. I have taken 3 pregnancy tests every other day since the 29th and each one has came up negative. My last test was taken yesterday morning. As of today I have very LITTLE brown when i wipe mixed with clearish stingy discharge. Was curious if this more likely to my period trying to arrive or possible pregnancy?

We have had sex several times starting March 13th through out the month.