Clomiphene is a fertility drug used to make sure you ovulate each cycle. The lowest dose used is 50mg and up to 250mg may be used if you don't respond to lower doses. Obviously if you miss a period you don't take the next month's tablets and you should do a pregnancy test. 6 months of treatment is the usual maximum.
Clomiphene works by 'kick-starting' the hormone system into stimulating an egg to grow.
It is probably best to make love every other day from about day 11-15 of your cycle, but this regime is not rigid and to be relaxed about it is certainly important. Yes, and its important that you know about these. You may experience some breast tenderness, mild abdominal discomfort or hot flushes. As long as these are not disturbing your daily routine, it is fine to continue taking the tablets. These kind of side effects are extremely rare.