hi.. someone do help me. me n my husband actively trying for Baby. i am on regular periods with average of 33days cycle

I know my ovulation time and v had timely intercourse. When I was, one day due for my periods I started with brown spotting.later next 3 days followed with blood clots but no bleeding. On 4th day m NT sure its pink or red but have slight bleeding. My doc LL return tomorrow evening. Can someone help with this. Is this my periods or something I need to work.