TTC at 41

I'm 41 and husband is 33. We suffered a miscarriage at 8 weeks back in April and have been trying since then for our rainbow baby. This month I have some good feelings. But I noticed when I wiped this morning there was some brown blood. I'm day 10 post ovulation. And my period is expected in 6 days. Is this just an early period or possible implementation? Breast are sore i keep getting nauseous throughout the day no vomiting though. Super moody. I wonder of these are early pregnancy symptoms or just wishful thinking. Or even PMS. Trying not to get discouraged because of my age.