Brown discharge, sex & pregnancy. Possible TMI

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Recently i found out i was pregnant (1-2). Anyways me & my S/O had sex last night and i went to wipe after and my discharge was very light brown stained. It only happened that once and wasnt blood red or pink it was just like normal discharge but light brown in colour. Is this normal? Today my discharge is normal and it was last night after sex it was just that one wipe. Im worried about everything as ive had three miscarriages in the past💜