I have been on my birth control pills for about 7 months, last month I skipped the inactive pills and started a new pack to skip my period because I was going on vacation. Well I took 2 pills late on my vacation and this month instead of having a period, I spotted very lightly for only about 2 days. I usually have bad cramps and headaches and did not have any this time. Should I take a pregnancy test or wait until next month and see if I have a period?