Hello and hope you are doing well.
1. It may be sometimes difficult to know exactly when ovulation will happen. It is therefore recommended to have intercourse between days 7 and 20 of a woman's menstrual cycle. A sperm can live inside a woman’s body for 3-5 days while the life of a released egg is only 4 to 12 hours. Pregnancy rates are highest when the egg and sperm join together within 4 to 6 hours of ovulation.
2. Clomid is generally well tolerated. The few side effects seen are abdominal discomfort and bloating, nausea, dizziness, weight gain, mood disorders and spotting.
3. While on clomid the spotting in the middle of your cycle can be related just to the drug and may not necessarily indicate pregnancy. If the spotting is accompanied by other symptoms like abdominal pain, nausea and vomiting, or fever you should contact your doctor as soon as possible.
Do keep me posted. Best wishes and kind regards!