Cramps & Fatigue After Barely Missed Period

My cycle is normally between 30 and 32 days long. I believe I ovulated on day 15. On day 19, I was in a somewhat mild but stressful car accident. No one was hurt and my only injuries were mild seatbelt injuries which my chiropractor is handling, but I was afraid that the stress of the accident would end any possibility of pregnancy this month. On day 32, the latest day I'd expect my period, I had very light spotting. I assumed my period was starting. But there was no spotting after that. On day 34, I got a little dizzy and slightly nauseous after lunch, which continued off and on throughout the day, and I was irritable, emotional, had cramps, backache, and started breaking out in acne. I thought that I was either setting up for a doozy of a period, or pregnant. Then on day 35, I got a positive pregnancy test. :) I am now day 36, hoping to get in to see my provider tomorrow. I've been tired and mild-moderate cramping all weekend. The cramps have scared me a little, but from everything I read online, cramps are normally unless they REALLY hurt. So hoping for the best!!! And hoping the cramps and fatigue go away soon!