Hello dear I understand your concern Do not worry Pregnancy is not possible when sex was done during the period time. Odor discharge is just due to mixing of blood an semen and due to improper hygiene. Other cause of odor discharge is vaginal infections. For that vaginal swab test and urine report will help in diagnosis. If swab test will positive then doctor will provide: Vaginal suppository clingen and lactobacilli. Take single dose of azithromycin + tinidazole + flucanozole. take other advises for proper hygiene. Wash vagina with warm salted water and then apply apple cidar vinegar. Use vagisil cream. Wear pure cotton loose undergarment and avoid sweats in vaginal area. Avoid excessive sweets and salt in diet. Drink plenty of water to maintain proper systemic circulation. Take healthy diet with vitamin and antioxidant supplements. Maintain proper hygiene before and after sex and urination Hope this may help you Contact HCM for further health query Best regards Dr. Sagar