One of the most efficient ways of not getting pregnant
is indeed by taking contraceptive pills. These day we have low dose estrogen
pills which minimize to a great extent the old side effects of pills. So you need not worry too much about the side effects. Depending upon the brand of drug you choose the side effects may vary like headache, nausea
sensation etc. However we hardly see these side effects anymore so you should probably go ahead with pills provided you have not/are not suffering from any other disorder like diabetes
, are not on blood thinners etc.