Very light AF...

Lauren • Just welcomed our sweet little girl into the world on March 22nd! I am the proud mother of 2 little boys, 6 and 3. My husband and I have been married almost a year but have known each other for close to 21 years!
My AF started last week, a day early, but it was so incredibly light. I'm talking couldn't use tampons bc it was so light. I've never had this happen before, but I've never had a period when I'm pregnant. However, my son is 5 and I'm in my early 30s. Can your body change where you have spotting of sorts and still be pregant? I'm 5 days from getting married and we have been TTC for a bit now. Should I take the test or wait until my period next month is supposed to come and see if it does?