Spotting a week after my period

My husband and i have been ttc for 2 months now we already have a almost 2yr old and idk wat its like to have early signs i didnt know i was pregnant till i wad 8 weeks n didn't have signs till my second trimester but for like 2-3wks now I've been srick to my stomach all day i had my period but im spotting brown blood till my husband an i had intercourse cause I'm supposed to be ovulating tomorrow and he stopped cuz brown turned to pink and now im cramping real bad and i had my period till i was 11 wks with my first and my husband thinks im having a miscarriage cuz thats NEVER happened and im stopped almost a wk ago